Sargo was a female Sarien on board the Deltaur. She helped carry the chest holding Roger Wilco into the laundery room. A fellow sarien teased her joking, that she was carrying her latest boy toy inside the chest for later fun. She did not like insubordination and ordered the soldier to keep walking or he would lose his litter privileges.
She likely died when self destruct went off on the ship (if she wasn't shot by Roger earlier), unless she had access to another escape pod.
She also appears to be a hairless female Sarien.