I like this list.

Massacre and Mongul belong but I'd have included Ultraman, Darkseid, Black Adam and Solomon Grundy.

@PowerHerc: I actually considered Darkseid, SG, and Ultraman. But the goal of this list was include super strength characters that superman would loose against 90% of the time

@LordMaverick said:

@PowerHerc: I actually considered Darkseid, SG, and Ultraman. But the goal of this list was include super strength characters that superman would loose against 90% of the time

OK.

If it was meant to be so specific, why not name the list "Super-strong Villains Who Would Beat Superman 90% of the Time"?

Calling it "DC's Heaviest Hitters" is much more general and open to interpretation.

I would add in Darkseid an' Mongul sr (the Elder). I mean, they have nearly killed Superman before