Kepy was originally a human who discovered about the Finfolk species on an ancient book. As a lover of the deep sea he decided to pursue the specie. Finding some members of he decided to submit himself to their ritual so he could become one of them.

Once transformed, Kepy lives like any normal Finfolk, rarely mentioning his human past, and other than the tattoo on his chest, seems like nothing remained; it's even unknown if he has any memory of it or he just pretends to not remember so he can bury this past. As a Finfolk, he is very friendly to other aquatic creatures, but rather shy and awkward outside water.