Junner was Antonia Chillingsworth's right hand man.
Antonia ordered Junner to take Riddick to her quarters. Riddick was separated from Jack and Abu al-Walid. Riddick observed Antonia's priced criminals one the Killer of Men, while he was escorted by Junner.
Junner later caught up with him in the hangar bay where Riddick fought him. Junner was intelligent and proficient with both a gun and a sword. Junner died in a duel with Riddick, when Riddick stabbed him in the eye.