A.I. Is a Crapshoot: Mei-I is proven to think of itself as a wannabe machine overlord with ambitions of conquering the "overworld" with a robot army, all with a chipper inflection, even calling Class 1-A their "new minions." Naturally this is Played for Laughs, Izuku not taking their claims seriously. Apparently Izuku and Melissa had a talk with Mei to disable the "superiority complexes" her AI programs tend to have.
Speed Blitz: During a threeway spar, Izuku proves capable of disrupting Todoroki's attacks so fast that the spectators don't even realize said attacks are happening at all.
Unstoppable Rage: The moment he sees Izuku, Bakugo goes into "mindless kill" mode on him, leaving the both of them late for their induction ceremony and large quakes all across UA.