Cupid

Cupid, one of The Roman gods of Love. Son of Venus. (Estranged) husband of Brunhilde.
First appeared in Season 2.
Season 2
Cupid arrived in Clearwater during Valentine's Day and helped Fionn Corvin free Jean-Ralphio Saperstein from the curse that gave him romantic superpowers and turned him amoral.
Pining for the Norse Valkyrie, Brunhilde, he travelled with Fionn, Modi, Freija and Eddie to Asgard to interrupt her impending marraige to an unknown suitor. With the help of Fionn and the others he interrupted A Wedding In Asgard, convincing Brunhilde to marry him over Momus.
They were last seen leaving on their honeymoon- leaving the wreck of Odin and Erebus' political union in their wake.
Season 3
When Ford accepted Jupiter's invite to his house the leader of the Romans asked him the favour of assisting Bacchus at Clearwater Community College, he mentioned in passing that Cupid was attending the college, too. Later, when Ford invited Bacchus to his Halloween party, Bacchus asked if he could 'bring a friend' and Ford agreed.
When Cupid arrived it was revealed that he had ballooned by a hundred pounds and was, again, an emotional mess- this time over his estrangement from his Norse wife, Brunhilde.