You were a member of the LoV and after the Shie Hassaikai leader attacked your base, taking a hand from Mr. Compress and killing a member. You and most of the other members wanted revenge so Shigaraki set up a plan. You acted like you were teaming with the Shie Hassaikai to kill the heroes.

You were watching from a camera while Mimic was shaking the halls using his quirk. Your part was soon, very soon.