Ikaris is a member of the Eternals, who are a genetically superior offshoot race of humanity who posses different abilities like, levitation and immortality. Ikaris is virtually immune to injury, and can regenerate his entire body if need be, he is also immune to disease, aging and extreme temperatures. Only total molecular dispersal can kill an Eternal. Ikaris is said to be the fastest flier of all Eternals, he can fly up to 850 miles per hour. He can employ illusions to alter his appearance, he can wield cosmic energy to enhance his strength and durability, and can release energy from his hands and eyes in the form of heat, and transportation.
Superman was sent to Earth as a baby while his planet Krypton was being destroyed. Krypton has a red sun so while he was on that planet he doesn’t have any powers, but because Earth has a yellow sun it gave him different powers. Those powers include super speed, flight, super strength, invulnerability, heat vision, freeze breath, x-ray vision, superhuman hearing, and a healing factor. The only thing that can kill him is kryptonite.
Tony Stark is a genius, billionaire, playboy, philanthropist, whose parents died in a tragic car accident. At one point Tony had a piece of shrapnel inches from his heart. This is when Tony and another prisoner created a suit to keep the shrapnel at bay and helped him escape. Tony keeps building suits like the one that helped him escape, and these suits give him many different powers. The powers include, flight, repulser rays, his helmet gives him a 360-degree vision, telecommunication, and strength.
Because his parents were murdered as a child, Bruce Wayne wages an eternal war on the criminals of Gotham City. Since that night he has trained his body and mind to near physical perfection and basically made himself a self-made superhero. He is a playboy billionaire who made technology and suits, and learned martial art, and combat strategy that helped him become Batman.
Pietro and his twin sister, Wanda, were raised by Django and Marya Maximoff, who were a gypsy couple. While the were adolescents Wanda and Pietro discovered they had abilities. Because Django was stealing food to feed his family a bunch of angry villagers attacked the gypsy camp, Pietro fled the camp with his sister using his super speed.
Barry Allen was a police scientist, while in his lab the night the particle reactor exploded and a thunderstorm. He was struck with lightning and this gave him the power of super speed. He also has control of time because of his super speed, he uses the speed to help him travel to different eras and other dimensions.
James Buchanan “Bucky” Barnes grew up in Brooklyn with his scrawny best friend Steve Rodgers. Bucky always looked out for Steve especially when Steve got into fights. After WW2 broke out Bucky and Steve enlisted, but only Bucky got enlisted in the 107th. Rodgers would become Captain America while Bucky and the 107th were captured and experimented on by HYDRA. Steve eventually rescued the 107th and they would join his side in taking down HYDRA. In one battle Bucky was knocked out a hole in the side of a train, he lost his grip before Steve would be able to pull him back in. Bucky survived the fall due to the experimentations and he would later become the assassin Winter Soldier. HYDRA brainwashed him, gave him super strength, and a metal arm. Eventually Steve learned that his friend was alive and eventually gave him his memories back and helped him become a hero.
While as Batman’s sidekick Jason Todd died because of the Joker while he was a kid. He returned to life with the help go Lazarus Pit, and the warping of time and reality. Jason was traumatized by his violent death, he returned to the world unhinged and wanting revenge. He trained himself to become a killer and a mercenary. Over time Jason learned to deal with his rage and made peace with Batman and other superheroes.