Jainicorn

Jainicorn is the het ship between Jake the Dog and Lady Rainicorn from the Adventure Time fandom.

Canon
Before the events of the series, Jake met Lady Rainicorn and they started dating. In the first episode, Finn convince the two lovers to go into a closet so he can keep the zombie invasion secret. In a later episode, Jake tries to get his brother (Finn) and his girlfriend (Lady Rainicorn) to get to know each other.

Fanon
FAN FICTION
 * Jake the Dog/Lady Rainicorn tag on AO3