Lazarus was a replicant and member of the Replicant Underground Resistance.
Lazarus assisted Eve when Blade Runner Harper pursued her, but was ultimately arrested in Chinatown.[1]
Harper subjected him to a Voight-Kampff test, which determined him to be a replicant. However, Harper let him go and tracked him to a rooftop, where the group held Nakayama. Harper soon arrived and subdued Lazarus.[1]
After Harper's failure to retire Lazarus, Taverner was assigned to do so.[1]