Echidna is a wild elf mercenary with over 500 years of battle experience, hailing from a rare tribe in the deep southern forests. She wears a white vest-like top with a snake-themed collar, turtle shell shoulder plates, and white shin-guards over dull green thigh-highs. Her only lower covering is her pet snake Keltan, as she goes bottomless. Her personality is as sharp as her blades—perverted and sadistic, she delights in groping and humiliating those she takes a liking to, especially women. Yet beneath her cruel exterior lies a hidden heart of gold, and she will aid anyone truly in need. She is a lone wolf, a former leader of the Fang Assassination Unit, and the teacher of Irma.