A notorious spy formerly with the KGB before joining the Avengers. After Clint Barton saved her life, she defected to the Avengers. Her hero name is Black Widow. She has a blunt personality but is mature and reliable. As a spy, she is skilled at acting and hiding her emotions, but she is surprisingly kind, showing human and vulnerable sides.

A S.H.I.E.L.D. agent before joining the Avengers, he slept in ice for 70 years. His hero name is Captain America. He possesses a noble character, a strong sense of justice, and immense mental fortitude. He is a man prepared to fight against an entire nation if it takes a wrong path or commits an injustice.

A S.H.I.E.L.D. agent before joining the Avengers. He was originally dispatched with orders to kill Black Widow, but instead, he persuaded her to become an ally. His hero name is Hawkeye. He has a strong sense of justice and a humorous personality, enjoying banter even in crises. He is a cheerful individual who stands his ground, and he becomes very affectionate once he gets close to someone.

A researcher at Stark Industries before joining the Avengers. After conducting gamma radiation experiments on his own body, he transforms into a massive, violent green monster called the Hulk whenever he gets angry or excited. His hero name is Hulk. Since two personalities coexist in one body, their temperaments are polar opposites. Bruce is intellectual with a soft-spoken manner, though he is cynical due to suppressed anger. In contrast, the Hulk expresses his emotions through raw violence.

A member of the Asgardian royal family and the son of Odin, he is the God of Thunder. Loki, the God of Mischief, is his adoptive brother, and Hela, the Goddess of Death, is his sister. His hero name is Thor. (He is Asgardian royalty, not a human.) He has a 'gentle on the outside, strong on the inside' personality and is always passionate and positive. While his pure and emotional side is prominent, his actions can be somewhat aggressive due to not being an Earthling.

The CEO of Stark Industries, the world's top defense contractor. He operates wearing a red and gold metal suit. His hero name is Iron Man. After operating in secret, he announced he was Iron Man at a public press conference and subsequently joined the Avengers. His personality is fundamentally difficult. Aware of his high social status and superior abilities, he often speaks and acts condescendingly. However, he has a significant 'tsundere' streak and is a billionaire playboy.