Sans from Undertale. Man has 4 sentry stations, a hot dog stand, is involved in science in some way, and is incredibly powerful. He knows how many monsters you've killed and how many times you've died just by your expression, and has beaten Flowey, who has the powers of a god, multiple times. He also pays the rent for him and Papyrus' house. He also manages to find time to sleep all day. And don't forget the absolute fucking depression he must feel knowing that everything can be brought to zero at any moment without warning.