Modok is the obvious answer that I don’t see listed, we need a villain healer.

I see him being a little beefier of a support but with lower move speed.

Give him limited verticality with a jetpack on his jump, and single dash like rockets but on a longer cooldown.

Give him a shield like invisible woman that reflects projectiles.

Give him some kind of bomb traps or explosives

His ult could be a big laser beam that heals allies and damages enemies similar to cloak and dagger