Was the Administrative Director during Operation Hell Gate, but was replaced by Richard Walsh at some point before Day 1. He was killed at the request of Stephen Saunders on Day 3.
Was the Administrative Director during Day 1, but was killed while handing Jack Bauer a key card containing information on a suspected mole within the agency.
Was the Assistant Administrative Director during Day 1. When Richard Walsh was killed, Mason took over his duties overseeing CTU's operations. After Day 1, Mason was demoted to CTU Director.
Background information and notes[]
Not many administrative directors have been mentioned throughout the series, so it is possible that the title was done away with after Season 1.