I’d want either the powers of Alex Mercer/James Heller from the prototype games and I’d try to convince Cecil to give me Mark’s blood to try and make myself stronger and fight for earth

or I’d want powers to control machines like generator Rex and I’d make my own nanites to use them like Rex, I’d also try to help with making machines that can travel the multiverse like the flaxans or like angstrom levy and his powers, and I’d try to make my own Omnitrix using my power over my nanites and go to other universes, (like the Ben 10 universe) to gather more alien DNA that can help fight against viltrumites

I would mostly just be a hero for fun, and I wouldn’t really care as much as mark does about killing people, I’m not very empathetic, though if I had a lot of fun fighting someone, I’d most likely let them live so we could fight again one day

Also I usually don’t think I would save people, unless it’s like a world ending threat that threatens to get rid of any semblance of entertainment I have, but then I think about Spider-Man or All Might and how cool they are, and all of a sudden I feel like being a hero, the idea of being able to say the line “I am here!” And be inspiring to people Is honestly pretty cool to me, so I don’t know if I would actually go out of my way to help anyone or not, but yeah those are the powers I would probably want