Cupid, rarely referred to his real name Eros, is one of the Spirit Of Valentines’ many "cupids" created to spread the joy of love, especially on Valentine's Day. Named after the God of love with the same name, he is an archer with a heart who dreams of permanently living a normal life out of work, with other spirits.

In his youth, he was a mischievous force to reckon with, before being punished by his master who stripped him off his second pair of wings. Over the years however, Eros has grown more mature and wise. But despite having "redeemed" himself, he was still that infamous angel in his family, often being ridiculed by his siblings.

He has a long history with the Guardians, with him being the catalyst of multiple incidents that disrupt their cycle of work. But over the years, they are now on slightly good terms, with Eros sometimes encountering Tooth and Sandy, along with occasionally North and Bunny on their respective holidays, while on duty. He does become close friends with Jack after his ascension into Guardianhood.

Eros wields a bow with two types of arrows: one with a gold tip that causes the target to fall deeply and uncontrollably in love and another tipped with lead which causes the target to feel aversion and indifference. Despite still using both arrows for his duties and defense, he rarely meddles with others’ personal affairs anymore, preferring to guide and watch them from a distance.

Despite seeming jaded, Eros still remains a charismatic yet wise and kind friend, always trying to calm the tension around others. He also prefers to hide his wings whenever he interacts with others, in order not to intimidate them. But despite looking harmless and innocent, he does have a good aim, so watch out if he points his bow at you and make sure not to get distracted by his beauty!