BFR Battle

No prep. Everyone in character. Win by BFR only.

Thor

Cyborg

Dr. Strange

Man-Thing

Rip Hunter

Green Lantern Hal

Dr. Manhattan

Zatanna

Hank Pym

Flash

Do they know they can only win by BFR? Some characters would do it sooner than others (Manhattan, for example, although he is just as likely to BFR himself because he gets bored).

Same rules as a regular versus. Whatever information they have in a no prep fight.
Stop overthinking and disappear someone...!

In that case, Rip Hunter.

All the others (even Flash) don't BFR off the bat, it's not their character. Manhattan could, but like I said before, he just as easily could remove himself from the battlefield out of sheer boredom.

Rip, on the other hand....has no other options.

I threw him in as a dark horse...

Rip hunter busts out his awesome beard while banging chicks through time, and it instantly incinerates all these cleanly shaven boymen.

Dr. Strange has a van dyke...