Babylon 5

Zack Allan was a member of Babylon 5 Security.

Zack was transferred to Babylon 5 in 2258 and joined Babylon 5 Security, shortly before Jeffrey Sinclair was reassigned. He became Garibaldi's fugleman or second in command in 2259 after whose aide Jack almost killed Michael.

When Nightwatch first came to the station in 2259 Zack ecstatically joined, based on the 50 credits he would be paid in addition to his regular paycheck a week. Slowly he became aware of the fascist nature of Nightwatch, and after witnessing firsthand the tactics they performed on the station to a shopkeeper who badmouthed Clark's administration, he agreed to help remove the organization from the station.

Following Garibaldi's resignation, Zack was appointed Babylon 5's Chief of Security in 2261.

Later in time he went back to Earth for a while, but got bored there. July 2280 he returned to Babylon 5 and re-upped for security, six months before station's decommissioning in January 2281.

After Babylon 5 was destroyed Zack became a security advisor to Centauri Emperor Vir Cotto.