Wheel was a droid that served as a Republic Strategic Information Service agent active during the Cold War. "Wheel" was part of Ardun Kothe's team of operatives along with "Hunter", "Chance," "Saber" and "Legate." As part of his plan to acquire the Shadow Arsenal, Kothe sent "Saber" and "Wheel" to Mon Gazza while the others had their missions elsewhere. After all pieces of the plan fell together, "Saber" and "Wheel" together participated in the infiltration of the Shadow Arsenal facility.
"Legate" then appeared to "Saber" and "Wheel", revealed their true allegiances, and attacked, killing them both in the process.
- Star Wars: The Old Republic Encyclopedia