Viscious

Viscious is a super mutant commander in the Master's Army in 2161.

Background
Viscious oversees the operations center in the Los Angeles Vault and controls access to the Master.

Other interactions
Viscious will attack the player on sight, if he has his weapon drawn, even if he wears Cathedral purple. Otherwise, he might question the presence of the player in the Vault and either direct him to the Master, for a nullifier or attack him.

If not killed directly by the Vault Dweller, he is still killed when the Cathedral is destroyed.

Appearances
Viscious appears in the original Fallout.