[A portal opened up in the helluva boss world, sucking all the Imps inside, where did they get taken to? The MHA universe!]

The I.M.P sucked into the Mha world and that's where the portal opened right onto the field where 1A was training

Izuku: Who are you guys? Are you villains?!

Aizawa: Stand down!

Bakugou: You heard him!