Chi was the first Officer of the Earth Cruiser Tobermoon, second-in-command to Captain I. Burton. He was also Burton's fiance. After Captain Burton decided to disobey the order to evacuate the Vela scientific expedition and destroy the Precursor base, Chi was ordered to return to Earth with the Tobermoon to inform Star Control of Burton's decision.
On Captain Burton's return trip to Earth, the Tobermoon was discovered drifting in Vela's Oort cloud, damaged by energy blasts that matched that of an Ur-Quan Dreadnought. No remains of the crew nor of First Officer Chi was found.