K is one of Poemy's classmates, but unfortunately for Poemy, her wild crush on him isn't reciprocated. In the second episode, K discovers that he is an alien who had been raised as a human, and he takes charge of the invasion of the planet, which is generally focused around ravishing Japanese women since hentai transmissions have given the aliens the idea that that's what Japanese women are really like. Unfortunately for the aliens, Prince K's body is composed entirely of tentacles. Fortunately for them (and perhaps the Aasu Sisters), he's more talk than action. Prince "K" and his family parody the Mars People from the game, Metal Slug. K's family home very closely resembles the photographs of UFOs supposedly taken by George Adamski in the early 1950s.

from wikipedia