Joel Keller, is a mercenary and smuggler born on Venezia. Joel is a former Spartan-II candidate. He was discharged due to augmentation failure and later took residence on Jacinto. Fortunately the procedure was not fatal, however he became addicted to a drug that acted as a suppressor to control growth hormone production because of his augmentations. Joel's former tag number before being discharged from the program by was Joel-089.