What game is the Assist Trophy Renji from in Super Smash Flash 2

Renji is another character from Bleach, along with Ichigo. They both wear robes.
To summon Renji, just using the Trophy, and he'll randomly appear.

He's the most helpful Trophy, since he stalks your foes and deal great damage using fast three-slash combos. His best move is his last move before he disappears: he summons this skeletal snake to strike across the stage, killing anything that touches it.