He appears in his true form:
Then we he proclaims he wants to “become one” with Allen:
OH NO “DEAR”, YOU LEAVE ALLEN ALONE OKAY? HE ALREADY HAS ENOUGH SHIT TO DEAL WITH.
And then we discover that apparently he was the little shit that killed Cross and later he pins Tyki on a wall in one seriously ambiguous position while piercing his hands:
ME: Wait for me Apo-chan, I’m coming