Kadian is a squad member in Mass Effect 1,2, and 3. Kadian is a first lieutenant but, his rank can rise to major if he survives Mass Effect 1.
Kadian can be killed in mass effect 1 and Ashley Williams likes Kadian in mass effect 1. If Kadian survives Mass Effect 1 then, Ashley dies or else the outcome is the opposite way around.
Kadian can be a fenmale Commander Sherpard's love interest in Mass Effect 1.