A disabled character in that kind of setting would be interesting, like have you ever seen goalball? (Used to be called murderball for how violent it is) a wheelchair user with a chair designed to function as a battering ram/tank/etc would be terrifying. It just takes some creativity

For clarity, you're referring to Wheelchair Rugby. Goalball is for visually impaired athletes and is sort of like blindfolded indoor soccer but using your hands. It's also cool! Just not the same thing as murderball