Finally all 3 antagonists for this arc are revealed.

We know Asana Mutsuba the first female antagonist.

Then the guy who looks like an old man is Tazaki Galient

And the last guy with the Pigeon on his shoulder (The fuck?) is Kayama Chevelle.

Oh! Maybe he is the Pigeon from Vrains hahah JK!

And!

Luke/Rook has a sister? or a cousin? Not sure

Her name is Haruka Kamijo!