A theory: MC probably got a few skills to transfer the spy's soul into a copy of Yoolaf's body. Most probably. Black Lavender
lmfao did you forget the voice pills and the human mask he has and he himself used to disguise as yoolar? He probably just gave that to the spy. ε=ε=(ノ≧∇≦)ノ
But guys who is yoolar rn?????