Darkness Manipulation – The ability to manipulate darkness/shadow.
Darkstar (Marvel) has this power (Official Handbook of the Marvel Universe V1 #3).
The Shade (DC) is a supervillain that controls a malleable extra dimensional darkness which he uses with deadly effect.
The Shroud (Marvel) creates a shadow that lacks mass and cannot be used to penetrate or bludgeon opponents (Official Handbook of the Marvel Universe V1 #10).
Shadow Lass (DC) has powers that are similar to the Shroud (DC Who’s Who V1 #20).
The Shi’ar Imperial Guard has Black Light (Marvel) can project black energy from his eyes.
Nightside (Marvel) is a doppelganger of Shadow Lass (Avengers West #81).
Mister Shadowpax – Pantheon #11 (Lone Star Press)
Drendari – Creature Collection I
Cloaker – D&D 3.5 – Monster Manual I
Shadow Lurker – TSR 2158 Monstrous Compendium Annual Volume 2
Shadow Mastiff – TSR 2166 Monstrous Compendium Annual Volume 3
Trading Card Games often allow the player to manipulate darkness.
Blanket of Darkness
Darkness Made by Malice
Darkness Shadow Bolt
Hands without Shadow
Shields of Darkness
Skin and Darkness Zealots