I'd say mum-rah, just because he actually makes the thundercats shake in their boots whenever he's at full power. Skeletor is a sissy that he-man pimpslaps everytime they meet.
Mum-rah has also been shown to be proficient at both physical combat as much as magical attacks. Skeletor (despite his intensely muscular frame) seldom fights physically and usually prefers ranged attacks and deceit and runs away when the battle heats up.
The only draw back that mum-rah has is that he has a limited time span when he's actually mum-rah (he needs to go back to being his mummy version to recharge).
Ofcourse, i haven't read any comics of thundercats or he-man, i'm basing this entirely on my memories on the cartoons.
Originally posted by D_Dude1210Skeletor can do much, much more than that.
Mumm Raa.Flight, Super Strength, Energy Blasts, Telekenisis, Shapeshifting, Teleportation, Force Fields... just some abilities I can remember from the cartoon.
Skeletor has energy blasts coming from his cane and prolly superspeed from all the running away he did.
Originally posted by Bentley
I think Skeletor can defeat Superman, don't know about Mum-Rah.
Originally posted by grimify
He did, and skeletor ko'd PC Supes with one shot, if I recall correctly.
DC Comics Presents #47 "From Eternia with Death!"
While trying to infiltrate Castle Grayskull, Skeletor inadvertently opens a dimensional rift that brings pre-Crisis Superman from Earth to Eternia.
In order to continue with his acquisition of Castle Grayskull uninterrupted, Skeletor casts a powerful spell over Superman and forces him to do battle with He-Man.
Superman manages to hold off He-Man long enough to break free of the spell Skeletor cast over him and the two heroes then turn on Skeletor. With Skeletor defeated, Superman is returned home to Earth through a space warp.