The Enslaver... Mrrungo Mu VS. The JLA

Who takes it?

Mrrungu-Mu(Full Power)

VS.

The JLA:

Superman
Wonder Woman
Aquaman
The Flash
Green Lantern Hal Jordan
Batman
Martian Manhunter
Steel
Green Arrow
Black Canary
Red Tornado
Plastic Man

No prep.

Battle takes place on a deserted planet 2X the size of earth. And 2X the gravity.

Debate.

Unless the JLA can destroy the power plant on his World Ship that fuels his powers, he crushes them all. And since the location of his ship wasn't mentioned, I assume it's not on the battlefield.

Mu was in Galactus's league of power.

Batman, Green Arrow, and Black Canary are all crushed by the extreme gravity