Reference sheet for Gamma from 2020, still really proud of her hands.

Gamma is a runner, born of a large quadruped (classified, but assumed to be some form of a big cat).
Due to extensive experiments she lacks the dorsal tubes of her kind and instead sports a row of long blade-like protrusions up either shoulder to her spine. She is long and slender with short but sharp claws and teeth. Her tail, tipped with a long sickle-shaped blade, has scalpel-like precision though her main form of assault is to run past the victim, scoring repetitive cuts with her shoulder blades. Her chitinous shell is surprisingly glossy, enough to look bronze or copper under most light.

Quick-witted and cynical, Gamma spent far too long aboard a WeylandYutani escape vessel after following the fleeing employees aboard. Realising her mistake too late that killing the crew had stranded her in space with no way to return to the planet.
Gamma was eventually retrieved by The Valhalla, a ship of somewhat illegal cargo runners. Understanding that this is her chance to leave, but unable to kill them all as it would strand her again, she begrudgingly stays aboard the Valhalla with the crew occasionally threatening their lives.