The Pseudogiant is one of the rarest and most fearsome mutants in the Zone, appearing in S.T.A.L.K.E.R.: Shadow of Chernobyl, S.T.A.L.K.E.R.: Clear Sky and S.T.A.L.K.E.R.: Call of Pripyat. It has developed incredible strength, inhuman resilience, and a grotesque form which heavily deviates from human-based mutations.