Izuku isn't the only person in 1A with an arch-enemy.

BOOM!

The explosion rocked the walls of gym zeta, sending clouds of dust through the air. As the debris settled, a figure emerged from the gaping maw, draped in a flowing cape, horned helmet, and two thin swords at his sides.

"I TOLD YOU I'D RETURN, HEROES!!" he yelled.

Complete silence.

Kaminari leaned over toward Iida and whispered, "Uh... do you know this guy?"

Behind them, Ojiro let out a long-suffering sigh. "Oh, for god's sake, not this again... I'm not in the mood for this, Lord Experiment! When are you going to take the hint and leave me alone?!"

"When you start taking me seriously!!" Lord Experiment stamped his foot.