Stun is a Dragon Age II status effect. Along with Sleep, Knockback, Knockdown, Paralyze and Pinning, Stun prevents combatants from taking action for a time. Stun can be inflicted by any class, but is most likely caused by rogues or warriors due to the number of stunning abilities which these classes have.

Stunned combatants:

• forget their current target
• abort current action
• are prohibited from taking any action for a time

Stunning abilities

Rogue

Sabotage:

• Miasmic Flask Stun chance: 100% vs. normal enemies

Subterfuge:

• Tactical Withdrawal Stun Chance: 100% vs. Normal enemies

Specialist:

• Power Stun chance: +3% vs. normal enemies (sustained mode)
• Stunning Power Upgrades Power Stun chance: +3% vs. normal enemies
• Harmony (passive) Stun chance: 1% vs. normal enemies in Speed or Precision

Swashbuckler (Isabela only):

• Shore Leave Stun chance: 100% vs normal enemies

Warrior

Vanguard:

• Claymore Stun chance: 100% vs. BRITTLE targets

Warmonger:

• Quake Stun chance: 100% vs. Knocked-down targets
• Pommel Strike Stun chance: 100% vs. normal enemies

Templar (Hawke and Carver only):

• Staggering Smite Stun chance: 50% vs. normal enemies

Reaver:

• Voracious Stun chance: 100% vs. normal enemies

Tevinter Fugitive (Fenris only)

• Spirit Flux Upgrades Lyrium Ghost : Stun chance: 100% vs. normal enemies

Mage

Arcane:

• Stunning Blast Stun chance: 100% vs normal enemies

Force Mage:

• Fist of the Maker Stun chace: 20% vs. normal enemies

Abilities exploiting stun

Rogue

Scoundrel:

• Twist the Knife Critical chance: 100% vs. stunned targets (passive)

Specialist:

• Slashing Power Upgrades Power: Physical damage: +? vs. stunned enemies

Warrior

Warmonger:

• Pommel Blow STAGGERchance: 100% vs. stunned targets