After traveling through time and being a Hydra, he was placed at the bottom of SHIELD as an undercover agent. Not only was he worried about being discovered by Director Black Braised Egg every day, but he also faced death threats when Hydra came online. Just about to become cannon fodder for superheroes to gain experience, the Doomsday spore physique quietly awakens!
[Absolute adaptability, infinite evolution] Being crushed by the Hulk? After resurrection, you will be immune to physical blunt blows and your strength will be doubled! Scorched by Superman's heat vision? After resurrecting, he absorbs solar energy and backhands him with a Kryptonian nemesis! From fighting the Chitauri monster in New York to beating the Joker like a ball in Gotham City, anything that doesn't kill me will only make me more invincible!
Nick Fury, Director of S. H. I. E. L. D.: "He is definitely S. H. I. E. L. D.'S most loyal agent!" Hydra leader: "Hail Hydra! He is our greatest masterpiece!" And looking at Wanda, Black Widow, Harley Quinn and Wonder Woman who are jealous of each other in his arms, the protagonist helplessly spreads his hands: "I'm just a Doomsday who wants to evolve quietly!"