diff --git a/lang/en.json b/lang/en.json
index 49ecfba..f56d630 100644
--- a/lang/en.json
+++ b/lang/en.json
@@ -56,6 +56,7 @@
       }
     },
     "Skill": {
+      "Unnatural": "Unnatural",
       "FIELDS": {
         "settings": {
           "label": "Settings era"
@@ -212,7 +213,13 @@
       "individual": "Individual",
       "community": "Community"
     },
+    "Harshness": {
+      "normal": "Normal",
+      "harsh": "Harsh",
+      "veryHarsh": "Very Harsh"
+    },
     "Label": {
+      "biodata": "Biodata",
       "skill": "Skill",
       "modifier": "Modifier",
       "rollView": "Roll View",
@@ -225,6 +232,12 @@
       "powShort": "POW",
       "conShort": "CON",
       "chaShort": "CHA",      
+      "strLong": "Strength",
+      "dexLong": "Dexterity",
+      "intLong": "Intelligence",
+      "powLong": "Power",
+      "conLong": "Constitution",
+      "chaLong": "Charisma",
       "total": "Total",
       "skills": "Skills",
       "gear": "Gear",
@@ -252,11 +265,14 @@
       "totalScore": "Total Score",
       "exhausted": "Exhausted",
       "skillRoll": "Skill Roll",
+      "charRoll": "Characteristic Roll",
       "finalScore": "Final Score",
       "failure": "Failure",
       "success": "Success",
       "criticalSuccess": "Critical Success",
-      "criticalFailure": "Critical Failure"
+      "criticalFailure": "Critical Failure",
+      "Characteristic": "Characteristic",
+      "targetScore": "Target Score"
     },
     "Edit": "Edit",
     "Delete": "Delete",
diff --git a/module/applications/sheets/protagonist-sheet.mjs b/module/applications/sheets/protagonist-sheet.mjs
index 5b00abf..64d73c5 100644
--- a/module/applications/sheets/protagonist-sheet.mjs
+++ b/module/applications/sheets/protagonist-sheet.mjs
@@ -148,9 +148,19 @@ export default class CthulhuEternalProtagonistSheet extends CthulhuEternalActorS
     let item
     // Debug : console.log(">>>>", event, target, rollType)
     // Deprecated : if (this.isEditMode) return
-    if (rollType === "skill") {
-      const li = $(event.currentTarget).parents(".item");
-      item = this.actor.items.get(li.data("item-id"));
+    switch(rollType) {
+      case "char":
+        let charId = $(event.currentTarget).data("char-id")
+        item = foundry.utils.duplicate(this.actor.system.characteristics[charId])
+        item.name = game.i18n.localize("CTHULHUETERNAL.Label." + charId + "Long")
+        item.targetScore = item.value * 5
+        break
+      case "skill":
+        const li = $(event.currentTarget).parents(".item");
+        item = this.actor.items.get(li.data("item-id"));
+        break
+      default:
+        throw new Error(`Unknown roll type ${rollType}`)
     }
     await this.document.system.roll(rollType, item)
   }
diff --git a/module/config/protagonist.mjs b/module/config/protagonist.mjs
index 677f225..ce33d15 100644
--- a/module/config/protagonist.mjs
+++ b/module/config/protagonist.mjs
@@ -25,3 +25,9 @@ export const CHARACTERISTICS = Object.freeze({
   }
 })
 
+export const HARSHNESS = Object.freeze({
+  "normal": "CTHULHUETERNAL.Harshness.normal",
+  "harsh": "CTHULHUETERNAL.Harshness.harsh",
+  "veryharsh": "CTHULHUETERNAL.Harshness.veryHarsh"
+})
+
diff --git a/module/config/system.mjs b/module/config/system.mjs
index 0aa6bc8..aab0e9a 100644
--- a/module/config/system.mjs
+++ b/module/config/system.mjs
@@ -42,6 +42,7 @@ export const ASCII = `
 export const SYSTEM = {
   id: SYSTEM_ID,
   CHARACTERISTICS: PROTAGONIST.CHARACTERISTICS,
+  HARSHNESS: PROTAGONIST.HARSHNESS,
   WEAPON_TYPE: WEAPON.WEAPON_TYPE,
   WEAPON_SUBTYPE: WEAPON.WEAPON_SUBTYPE,
   BOND_TYPE: BOND.BOND_TYPE,
diff --git a/module/documents/actor.mjs b/module/documents/actor.mjs
index 49a4088..8fe0092 100644
--- a/module/documents/actor.mjs
+++ b/module/documents/actor.mjs
@@ -1,4 +1,5 @@
 export default class CthulhuEternalActor extends Actor {
+  
   async _preCreate(data, options, user) {
     await super._preCreate(data, options, user)
 
diff --git a/module/documents/roll.mjs b/module/documents/roll.mjs
index bec6669..23f2132 100644
--- a/module/documents/roll.mjs
+++ b/module/documents/roll.mjs
@@ -95,8 +95,8 @@ export default class CthulhuEternalRoll extends Roll {
         console.log(options.rollItem)
         options.initialScore = options.rollItem.system.computeScore()
         break
-      case "characteristic":
-        options.initialScore = options.rollItem.value * 5
+      case "char":
+        options.initialScore = options.rollItem.targetScore
         break
       default:
         options.initialScore = 50
diff --git a/module/models/protagonist.mjs b/module/models/protagonist.mjs
index 1e3f10e..750b956 100644
--- a/module/models/protagonist.mjs
+++ b/module/models/protagonist.mjs
@@ -28,7 +28,7 @@ export default class CthulhuEternalProtagonist extends foundry.abstract.TypeData
 
     schema.wp = new fields.SchemaField({
       value: new fields.NumberField({ ...requiredInteger, initial: 0, min: 0 }),
-      max: new fields.NumberField({ ...requiredInteger, initial: 0, min: 0 }),
+      max: new fields.NumberField({ ...requiredInteger, initial: 3, min: 0 }),
       exhausted: new fields.BooleanField({ required: true, initial: false })
     })
 
@@ -44,7 +44,6 @@ export default class CthulhuEternalProtagonist extends foundry.abstract.TypeData
       recovery: new fields.NumberField({ ...requiredInteger, initial: 0, min: 0 }),
       violence:  new fields.ArrayField(new fields.BooleanField(), { required: true, initial: [false, false, false], min:3, max:3}),
       helplessness: new fields.ArrayField(new fields.BooleanField(), { required: true, initial: [false, false, false], min:3, max:3 }),
-
       breakingPoint: new fields.NumberField({ ...requiredInteger, initial: 0, min: 0 })
     })
 
@@ -65,7 +64,8 @@ export default class CthulhuEternalProtagonist extends foundry.abstract.TypeData
       home: new fields.StringField({ required: true, nullable: false, initial: "" }),
       birthplace: new fields.StringField({ required: true, nullable: false, initial: "" }),
       eyes: new fields.StringField({ required: true, nullable: false, initial: "" }),
-      hair: new fields.StringField({ required: true, nullable: false, initial: "" })
+      hair: new fields.StringField({ required: true, nullable: false, initial: "" }),
+      harshness: new fields.StringField({ required: true, nullable: false, initial: "normal", choices:SYSTEM.HARSHNESS }),
     })
 
     return schema
@@ -74,6 +74,75 @@ export default class CthulhuEternalProtagonist extends foundry.abstract.TypeData
   /** @override */
   static LOCALIZATION_PREFIXES = ["CTHULHUETERNAL.Protagonist"]
 
+  prepareDerivedData() {
+    super.prepareDerivedData();
+
+    let updates = {}
+    if ( this.wp.max !== this.characteristics.pow.value) {
+      updates[`system.wp.max`] = this.characteristics.pow.value
+    }
+    let hpMax = Math.round((this.characteristics.con.value + this.characteristics.str.value) / 2)
+    if ( this.hp.max !== hpMax) {
+      updates[`system.hp.max`] = hpMax
+    }
+    
+    // Get Unnatural skill for MAX SAN
+    let unnatural = this.parent.items.find(i => i.type === "skill" && i.name.toLowerCase() === game.i18n.localize("CTHULHUETERNAL.Skill.Unnatural").toLowerCase())
+    let minus = 0
+    if (unnatural) {
+      minus = unnatural.data.skillTotal
+    }
+    let maxSan = Math.max(99 - minus, 0)
+    if ( this.san.max !== maxSan) {
+      updates[`system.san.max`] = maxSan
+    }
+
+    let bp = Math.max(this.san.value - this.characteristics.pow.value, 0)
+    if ( this.san.breakingPoint !== bp) {
+      updates[`system.san.breakingPoint`] = bp
+    }
+
+    let recoverySan = this.characteristics.pow.value * 5
+    if (recoverySan > this.san.max) {
+      recoverySan = this.san.max
+    }
+    if ( this.san.recovery !== recoverySan) {
+      updates[`system.san.recovery`] = recoverySan 
+    }
+
+    let dmgBonus = 0
+    if (this.characteristics.str.value <= 4) {
+      dmgBonus = -2
+    } else if (this.characteristics.str.value <= 8) {
+      dmgBonus = -1
+    } else if (this.characteristics.str.value <= 12) {
+      dmgBonus = 0
+    } else if (this.characteristics.str.value <= 16) {
+      dmgBonus = 1
+    } else if (this.characteristics.str.value <= 20) {
+      dmgBonus = 2
+    }
+    if ( this.damageBonus !== dmgBonus) {
+      updates[`system.damageBonus`] = dmgBonus
+    }
+
+    // Sanity check
+    if (this.san.value > this.san.max) {
+      updates[`system.san.value`] = this.san.max
+    }
+    if (this.wp.value > this.wp.max) {
+      updates[`system.wp.value`] = this.wp.max
+    }
+    if (this.hp.value > this.hp.max) {
+      updates[`system.hp.value`] = this.hp.max
+    }
+
+    if (Object.keys(updates).length > 0) {
+      this.parent.update(updates)
+    }
+  }
+
+  /** */
   /**
    * Rolls a dice for a character.
    * @param {("save"|"resource|damage")} rollType The type of the roll.
diff --git a/module/models/skill.mjs b/module/models/skill.mjs
index b0e592d..d37fc43 100644
--- a/module/models/skill.mjs
+++ b/module/models/skill.mjs
@@ -34,7 +34,7 @@ export default class CthulhuEternalSkill extends foundry.abstract.TypeDataModel
       return `${this.base} + ${  String(this.bonus)}`;
     }
 
-    // Split the base value per stat : WIS,DEX,STR,INT,CHA (example)
+    // Split the base value per stat : 
     let base = this.base.toLowerCase();
     let char = actor.system.characteristics[base];
     if (!char) {
diff --git a/templates/chat-message.hbs b/templates/chat-message.hbs
index b516b1d..4ba4065 100644
--- a/templates/chat-message.hbs
+++ b/templates/chat-message.hbs
@@ -6,11 +6,15 @@
         </div>
         <div class="intro-right">
             <ul>
+              {{#if (eq rollType "char")}}
+              <li><strong>{{localize "CTHULHUETERNAL.Label.charRoll"}}</strong></li>
+              {{/if}}
               {{#if (eq rollType "skill")}}
-              <li><strong>{{localize "CTHULHUETERNAL.Label.skillRoll"}} {{rollItem.name}} : {{initialScore}}</strong></li>
-              <li>{{localize "CTHULHUETERNAL.Label.modifier"}} : {{modifier}}</li>
-              <li>{{localize "CTHULHUETERNAL.Label.finalScore"}} : {{targetScore}}</li>
+              <li><strong>{{localize "CTHULHUETERNAL.Label.skillRoll"}}</strong></li>
               {{/if}}        
+              <li><strong>{{rollItem.name}} : {{initialScore}}%</strong></li>
+              <li>{{localize "CTHULHUETERNAL.Label.modifier"}} : {{modifier}}%</li>
+              <li>{{localize "CTHULHUETERNAL.Label.targetScore"}} : {{targetScore}}%</li>
               {{#if isSuccess}}
                 {{#if isCritical}}  
                 <li class="result-critical-success">{{localize "CTHULHUETERNAL.Label.criticalSuccess"}}</li>
diff --git a/templates/protagonist-biography.hbs b/templates/protagonist-biography.hbs
index 96b88e2..531d7ff 100644
--- a/templates/protagonist-biography.hbs
+++ b/templates/protagonist-biography.hbs
@@ -1,4 +1,10 @@
 <section class="tab protagonist-{{tab.id}} {{tab.cssClass}}" data-tab="{{tab.id}}" data-group="{{tab.group}}">
+  
+  <fieldset>
+    <legend>{{localize "CTHULHUETERNAL.Label.biodata"}}</legend>
+    {{formInput systemFields.biodata.fields.harshness value=system.biodata.harshness name="system.biodata.harshness" localize=true}}
+  </fieldset>
+
   <fieldset>
     <legend>{{localize "CTHULHUETERNAL.Label.description"}}</legend>
     {{formInput systemFields.description enriched=description value=system.description name="system.description" toggled=true}}
diff --git a/templates/protagonist-main.hbs b/templates/protagonist-main.hbs
index 3a6231e..5eb7950 100644
--- a/templates/protagonist-main.hbs
+++ b/templates/protagonist-main.hbs
@@ -14,7 +14,7 @@
           <div class="flexrow">
             {{formField systemFields.hp.fields.value value=system.hp.value}}
             /
-            {{formField systemFields.hp.fields.max value=system.hp.max rootId=partId disabled=isPlayMode}}
+            {{formField systemFields.hp.fields.max value=system.hp.max rootId=partId disabled=true}}
           </div>
         </fieldset>
 
@@ -35,11 +35,11 @@
             {{localize "CTHULHUETERNAL.Label.current"}} {{formField systemFields.san.fields.value
             value=system.san.value}}
             {{localize "CTHULHUETERNAL.Label.max"}} {{formField systemFields.san.fields.max value=system.san.max
-            rootId=partId disabled=isPlayMode}}
+            rootId=partId disabled=true}}
             {{localize "CTHULHUETERNAL.Label.recovery"}} {{formField systemFields.san.fields.recovery
-            value=system.san.recovery}}
+            value=system.san.recovery disabled=true}}
             <span data-tooltip='{{localize "CTHULHUETERNAL.Tooltip.sanBP"}}'>{{localize "CTHULHUETERNAL.Label.breakingPoint"}}</span> {{formField systemFields.san.fields.breakingPoint
-            value=system.san.breakingPoint}}
+            value=system.san.breakingPoint disabled=true}}
           </div>
           <div class="flexrow">
             {{localize "CTHULHUETERNAL.Label.violence"}}
@@ -60,7 +60,7 @@
           <legend>{{localize "CTHULHUETERNAL.Label.willpower"}}</legend>
           <div class="flexrow">
             {{localize "CTHULHUETERNAL.Label.current"}}{{formField systemFields.wp.fields.value value=system.wp.value}}            
-            {{localize "CTHULHUETERNAL.Label.max"}}{{formField systemFields.wp.fields.max value=system.wp.max rootId=partId disabled=isPlayMode}}
+            {{localize "CTHULHUETERNAL.Label.max"}}{{formField systemFields.wp.fields.max value=system.wp.max rootId=partId disabled=true}}
             {{localize "CTHULHUETERNAL.Label.exhausted"}}{{formField systemFields.wp.fields.exhausted value=system.wp.exhausted }}
 
           </div>
@@ -74,39 +74,39 @@
   <fieldset class="protagonist-characteristics protagonist-characteristics-{{ifThen isPlayMode 'play' 'edit'}}">
     <legend>{{localize "CTHULHUETERNAL.Label.characteristics"}}</legend>
     <div class="protagonist-characteristic" data-drag="true" data-drag-type="characteristic">
-      <label>{{localize "CTHULHUETERNAL.Label.strShort"}}</label>
+      <label class="rollable" data-roll-type="char" data-char-id="str">{{localize "CTHULHUETERNAL.Label.strShort"}}</label>
       {{formField systemFields.characteristics.fields.str.fields.value value=system.characteristics.str.value
-      rootId=partId disabled=isPlayMode classes="rollable" dataset=rollType.str}}
+      rootId=partId disabled=isPlayMode }}
       {{mul system.characteristics.str.value 5}}
     </div>
     <div class="protagonist-characteristic" data-drag="true" data-drag-type="characteristic">
-      <label>{{localize "CTHULHUETERNAL.Label.dexShort"}}</label>
+      <label class="rollable" data-roll-type="char" data-char-id="dex">{{localize "CTHULHUETERNAL.Label.dexShort"}}</label>
       {{formField systemFields.characteristics.fields.dex.fields.value value=system.characteristics.dex.value
-      rootId=partId disabled=isPlayMode classes="rollable" dataset=rollType.dex}}
+      rootId=partId disabled=isPlayMode }}
       {{mul system.characteristics.dex.value 5}}
     </div>
     <div class="protagonist-characteristic" data-drag="true" data-drag-type="characteristic">
-      <label>{{localize "CTHULHUETERNAL.Label.conShort"}}</label>
+      <label class="rollable" data-roll-type="char" data-char-id="con">{{localize "CTHULHUETERNAL.Label.conShort"}}</label>
       {{formField systemFields.characteristics.fields.con.fields.value value=system.characteristics.con.value
-      rootId=partId disabled=isPlayMode classes="rollable" dataset=rollType.con}}
+      rootId=partId disabled=isPlayMode }}
       {{mul system.characteristics.con.value 5}}
     </div>
     <div class="protagonist-characteristic" data-drag="true" data-drag-type="characteristic">
-      <label>{{localize "CTHULHUETERNAL.Label.intShort"}}</label>
+      <label class="rollable" data-roll-type="char" data-char-id="int">{{localize "CTHULHUETERNAL.Label.intShort"}}</label>
       {{formField systemFields.characteristics.fields.int.fields.value value=system.characteristics.int.value
-      rootId=partId disabled=isPlayMode classes="rollable" dataset=rollType.int}}
+      rootId=partId disabled=isPlayMode }}
       {{mul system.characteristics.int.value 5}}
     </div>
     <div class="protagonist-characteristic" data-drag="true" data-drag-type="characteristic">
-      <label>{{localize "CTHULHUETERNAL.Label.powShort"}}</label>
+      <label class="rollable" data-roll-type="char" data-char-id="pow">{{localize "CTHULHUETERNAL.Label.powShort"}}</label>
       {{formField systemFields.characteristics.fields.pow.fields.value value=system.characteristics.pow.value
-      rootId=partId disabled=isPlayMode classes="rollable" dataset=rollType.pow}}
+      rootId=partId disabled=isPlayMode }}
       {{mul system.characteristics.pow.value 5}}
     </div>
     <div class="protagonist-characteristic" data-drag="true" data-drag-type="characteristic">
-      <label>{{localize "CTHULHUETERNAL.Label.chaShort"}}</label>
+      <label class="rollable" data-roll-type="char" data-char-id="cha">{{localize "CTHULHUETERNAL.Label.chaShort"}}</label>
       {{formField systemFields.characteristics.fields.cha.fields.value value=system.characteristics.cha.value
-      rootId=partId disabled=isPlayMode classes="rollable" dataset=rollType.cha}}
+      rootId=partId disabled=isPlayMode }}
       {{mul system.characteristics.cha.value 5}}
     </div>
   </fieldset>
diff --git a/templates/roll-dialog.hbs b/templates/roll-dialog.hbs
index 80d5325..b35af56 100644
--- a/templates/roll-dialog.hbs
+++ b/templates/roll-dialog.hbs
@@ -1,18 +1,21 @@
 {{log "roll-dialog" this}}
 <div class="fvtt-cthulhu-eternal-roll-dialog">
-  {{#if (eq rollType "skill")}}
     <fieldSet>
+      {{#if (eq rollType "skill")}}
       <legend>{{localize "CTHULHUETERNAL.Label.skill"}}</legend>
-      <div class="dialog-skill">{{rollItem.name}} : {{initialScore}}</div>
+      {{/if}}
+      {{#if (eq rollType "char")}}
+      <legend>{{localize "CTHULHUETERNAL.Label.characteristic"}}</legend>
+      {{/if}}
+      <div class="dialog-skill">{{rollItem.name}} : {{initialScore}}%</div>
     </fieldSet>
+
     <fieldSet class="dialog-modifier">
       <legend>{{localize "CTHULHUETERNAL.Label.modifier"}}</legend>
       <select name="modifier" class="roll-skill-modifier">
         {{selectOptions choiceModifier selected=modifier}}
       </select>
     </fieldSet>
-  {{/if}}
-
   <fieldSet>
     <legend>{{localize "CTHULHUETERNAL.Label.rollView"}}</legend>
     <select name="visibility">