Tasman was a serial rapist who preferred to strangle his victims to death. He was confined within the Slab for an unspecified amount of time before E-Day. He, along with the rest of the Psych ward, were forcibly transferred in with the sane prisoners. However, during a blackout, Rushkin started a small scale war between the two strains of prisoners after he stabbed Seffert. Tasman was then brutally stabbed to death by Merino, who had just done the same to Rushkin.