Funny adjective – Causing or intended to cause laughter. Incredible and funny are semantically related. In some cases you can use "Incredible" instead an adjective "Funny". Nearby Words: funning, funnily
Particularly interesting in that he never gained any actual superpowers (other than an incredible resistance or immunity to poisons and toxins), instead deciding it'd be really funny if he concentrated all his efforts to racking up a bodycount that'd make an Evil Overlord blush.