My suicide squad will be made of
Ultron is one of the best marvel villains and my favorite. He is powerful and has an army of himself at his disposal.
Thanos has the Infinity Gauntlet enough said.
Darkseid is DC's Thanos, he is the ruler of Apocalypse and this tons of apocalyptian weapons he is good to go.
Brainiac is a main villain to Superman where he is the opposite to his brawn which is brain. if he can take on superman of course he's in.
You agree. Yes, No, Maybe So.