Peter Parker, a high school student, was bitten by a radioactive spider during a science demonstration, resulting in his transformation into Spider-Man.

Witnessing the murder of his parents, Thomas and Martha Wayne, in a mugging incident inspired Bruce Wayne to become Batman and fight crime.

Superman was sent to Earth from the planet Krypton as an infant to escape its destruction.

Dr. Abraham Erskine was the scientist responsible for developing the super-soldier serum that transformed Steve Rogers into Captain America.

The alien symbiote that bonded with Eddie Brock and created Venom was known as Venom.

T'Challa is the real name of the superhero known as Black Panther, the king of Wakanda.

Doomsday was the villain who killed Superman in the comic book storyline 'The Death of Superman'.

S.H.I.E.L.D. (Strategic Homeland Intervention, Enforcement, and Logistics Division) is the superhero team formed by Nick Fury to protect Earth from extraterrestrial threats.

Xavier's School for Gifted Youngsters is the mutant school founded by Professor X to train young mutants in the use of their powers.

The Green Lantern Corps is the intergalactic peacekeeping force led by the Green Lanterns, who are chosen by the Guardians of the Universe to wield the power of the Green Lantern rings.

Thanos belonged to the alien race known as the Titans, who were powerful beings with superhuman abilities.

Ant-Man is the superhero who can shrink to microscopic size and communicate with ants.

Storm is the superhero who can control the weather and manipulate atmospheric phenomena.

Electro is the superhero who can generate and manipulate electricity.

Kang the Conqueror is the superhero who can manipulate time and travel through different eras.