Tiron

Tiron was a regular customer at Quark's on Deep Space 9 and a member of an unnamed species. He was attracted to Kira Nerys, but she drove off his advances by claiming that Odo was her lover. Still obsessed with her, Tiron paid Quark for a holosuite program that featured Kira. When Kira discovered Quark's scheme she made significant changes to the program, including placing Quark's head on her body, much to Tiron's displeasure. (DS9: "Meridian")

Tiron was the first of many Star Trek roles for Jeffrey Combs. His species is unidentified and never appeared again. The mirror universe Tiron (Tiron (mirror) at Memory Beta, the wiki for licensed Star Trek works) appears in the Shards and Shadows short story "A Terrible Beauty".