Board Thread:Theories Discussion/@comment-6946747-20130306192825/@comment-16798306-20130307072739

I've always thought that the Epitome of a Sin happens when the Sin finds a "compatible" soul to latch on to. Regardless of whether the Epitome has taken place or not, the Sin, inside its Vessel, still contains a reasonable amount of power. I'm guessing that its full power is only unlocked after its Epitome takes place, though that may not be the case.

Regarding Wrath, maybe it was just hitching a ride on Kayo's Scissors before it transferred to another Vessel? Sort of like the case of the Demon of Gluttony travelling through the Four Mirrors of Lucifenia.