He was a simple sailor, sent on an expedition to explore strange new portions of the sea. Not even a week in though, disaster strikes. When a strange ooze in the water captures him he is left to die by the crew and dragged down. Now he is a monster, lost in a strange world with nothing except a thirst for vengeance.
(A League of Legends and MLP crossover)

There are some creatures that are forgotten or never known about, back when Equestria was just starting and the Princesses had just begun to rule there was another species unknown to them. The humans, they were an old race that had been around much longer than the ponies. However one day they were wiped out. Only one lives a young boy named Sean, the last human.