|The following is based on S.T.A.L.K.E.R.: Shadow of Chernobyl cut content and has not been confirmed by canon sources.|
Karlik is a mutant originally planned for S.T.A.L.K.E.R.: Shadow of Chernobyl.
Not much is known about Karlik, aside from the fact that it looks like a short mutated human. Its dwarf-like properties are somewhat reminiscent of the Burer.