Superman is from Krypton and his true parents are Lara-El and Jor-El.He was sent to earth when he was adopting by Jonathan and Martha Kent.When he was young he don´t know that he has great powers after he start going to school he discover them.His power is from sun-when he is closer then he is stronger.If he get very close to sun he become indestructible and invincible.He´s power including:Super strength,Super speed,and invulnerability. He also has the power of flight as well as X-ray, heat, microscopic, and telescopic vision.
General Zod has the same power like superman but he is more skilled in fight hand to hand then him.We can say that he is a bit weaker then superman because superman was on earth longer time.But he is still the most dangerous and powerful villain for superman.
Darkseid(Real Name UXAS)is the tyrannical ruler of the planet Apokolyps, and his ultimate goal is to conquer the universe and eliminate all free will. As one of the most powerful beings in the DC Universe, the character became a staple Superman villain and a major enemy of the Justice League.Abilities:Superhuman strength, speed, and durability,Flight,Energy and mass manipulation,Telekinesis,Omnipotence,Omnipresence,Invulnerability,Teleportation,Immortality,Omega powers, including projection of Omega beams.
Ultron is a robot created by scientist Hank Pym.He is made from adamantium his is the main enemy for Avengers and he has abilities including:Artificial intelligence with genius-level intellect,Superhuman strength, speed, and durability,Flight,Energy blasts.And his mind is highly resist from mind control or manipulation.