From Dragon Quest Wiki

Mercy is an ability in the Dragon Quest series, offering weaker enemies a chance to flee. Not the most useful skill over all, it does an excellent job reflecting the kind-hearted nature of Rangers.


Dragon Quest IX: Sentinels of the Starry Skies[edit]

This ability is learned with 16 skill points allocated into Ruggedness skill. The skill uses the same resistance factor as Whack, meaning that an enemy immune to instant death will not swallow their pride and vacate the battle. On top of this, the user's level is factored into the calculation, with the chance for success increasing by 1% with every level gained.

Dragon Quest X[edit]

Mercy is learned by putting 2 points into Ruggedness this time, and costs 2 MP to use. Spared enemies will now drop items at their normal rates while fleeing, expediting the acquisition of materials and gear.