|The following is based on Fallout 3 cut content and has not been confirmed by canon sources.|
Sykes and Cossler dragged some unconscious guy from the dorms into the labs. I tried to ask what was going on, but they just glared at me....”— Shelton Delacroix,
Cossler was a worker of unknown occupation in Vault 87.
Cossler is mentioned only in Fallout 3.