"Hello, I am Nitro. Nitro is the grandchild of a reasonably powerful hero, his mother didn't inherit powers but he did. When his powers were discovered his mother didn't want him to do sidekick work but he eventually convinced her. He became the sidekick for a hero, but the hero got hurt and blamed everything on Nitro. He stopped being a hero that day, but now he's been asked to pick the mantle back up as an actual hero and captain of a team.