Leon Kowalski is a member of Roy Batty's band of fugitive replicants in the film. Leon has an A Physical Level (superhuman strength and endurance) & a C Mental Level (subnormal intelligence).
He is often brutal and sadistic in his methods but not very smart, even for human standards. Because of this Leon tends to resort to raw savagery and violence when trapped in a difficult and stressing situation he can't control.
