Who should the reader be

Tony Stark with all suits

Adam from Record Of Ragnarok

Ghost Rider

Thor (will be combination of all versions I can find or you can choose)

Batman (you can choose which version just will probably be needing to do some research depending on which one)

Escanor

Meliodas

Ban

One of the other sins or commandments or someone that's all in one

Whitebeard or someone with his powers

Redhood

Deadshot

Demigod or rather demiprimordial of Chaos from Greek mythology

Some random combination of all of them so he's super op