Marvel Signed in at the Beginning, and Thanos Snapped His Fingers

I traveled through Marvel and became a five-year-old orphan. Fortunately, the sign-in system was launched in time. After signing for twenty-five years, I will be immortal, possess both civil and military skills, and dismantle tanks with my bare hands! Compete with Howard to see who is the number one genius, and turn Tony into a nanomaniac; Waiting for Captain America for seventy years, watching little Tony grow up. Others rely on armor and the power of the God of Thunder to fight, but I can kill indiscriminately just by lying down and signing in. The battle in New York shows off the armor, the civil war mediates mutual traps, and Infinity War is full of water. Endgame? Don't let Tony die. I'll wear the Infinity Gauntlet, I'll snap the fingers, I'll fight, I'll clear Thanos' army. Save all the heroes, rewrite all the knives, and flirt with the Avengers for free. This Marvel life is simply wonderful!