The preview of next episode states that it will be “family friendly,”which is obviously a lie,so I think at some point in the episode,it will go show allen telling the coalition about mark,and then show him getting attacked by viltrumites,and the ep 4 will be about the sequids and the lizard league.
As much as I hoped it would,I don’t think the thraxa fight will be the mid season finale.
Definitely still excited to watch it next year though!