Despotellis is a member of the Sinestro Corps and a villain from the Green Lantern series, a part of the larger DC Multiverse - despite being the smallest Yellow Lantern currently known it is also one of the most dangerous and deadly of the Yellow Lanterns, being a sentient virus capable of killing off entire worlds : it has become the natural archenemy of Leezle Pon, another sentient virus which has allied itself with the Green Lantern Corps.

Romanceable I guess