Well lets look at it, doomsday killed superman juggernaught could never do that unless backed up by the hulk and various other big shots. Now doomsday is like a super version of hulk. Cant kill him the same way twice, the only thing that works on him and can be used more than twice is brute strength but the only good guy who can go toe to toe with doomsday on that is superman well hulk aswell. Juggernaught is unstoppable when moving he is invulnerable to all means of harm like doomsday so a fight between these two i would call it doomsday as he is faster stronger and more resistance if it was hulk and juggernaught then they win. Or just world war hulk would be enough.
DOOMSDAY WINS
Doomsday he can't die
Luffy would win, but it would be hard.
Tie
goku
Doomsday would destroy Jason so easily and it doesn't matter if Jason can't die because he can't win in a fight against Doomsday.
doomsday after a long fight he will adapt to thors attacks.
Super Man
Iron man would win hands down!
definitely doomsday! if he can beat superman, he can beat Solomon grundy!
Depends on who adapts first. If Doomsday evolves telepathy he could win. If Juggernaut calls upon enough magic from Cyttorak (which is highly unlikely) he could destroy Doomsday with a single punch. Otherwise, it's forever a stalemate, with Doomsday using Juggernaut as an indestructible punching bag.
Doomsday the cloverfield guy is big but superman has taken down bigger dudes with actual powers and doomsday killed superman. Though he died in the fight as well.
Hulk and Thor have fought many times and Hulk usually wins because of his regeneration power and because the more made he gets the stronger he gets. Doomsday has a similar power as the hulk but instead of regeneration he can adapt to who he is fighting to win the fight. Since Hulk usually beats Thor I will give this title to Doomsday.