They're gonna win the endgame throwing dad jokes

I literally came here hoping someone knew who the other two were.

Aight, powers of deduction and Google-fu. Transform me!
*does a little spinning dance while humming the Sailor Moon theme*
Aha, it's Hourman and Atom! The one behind them is Doctor Mid-Night!

Ahhh, ok. Never heard of Hourman and Doctor Mid-Night.