Clogged
Looking down at his large opponent, Levi unsheathed his weapon, determined to end this battle once and for all.
His opponent gave a large growl, ready to attack. Levi readied himself, prepared to dodge the incoming attack. With the grace of swan, Levi dodged the attack from his foe and dealt the finishing blow.
Wiping his hands clean, Levi walked away as the foe gave out a dying scream.
Levi, humanities strongest, had just saved them from a clogged toilet.
Food
Whatever it was, it was a more formidable opponent than the last. It fed on the insides of it's victim, the stench of which was revolting. The gray-ish green monster seemed alive, and ready to feed on his next victim.
Levi stabbed the monster through the middle, putting the monster in the only place mould should ever be in, the garbage.