Shadow Slime
Slimes usually are dimwitted and loveable but Shadow Slimes were an experiment created but a wizard who was trying to understand the routes of sentience. Quickly however they were repurposed into weapons. They imprint on their masters when they are made and follow their instructions to the letter. They are still acidic and resistant to all weaponary but not very good at creative thinking.
Powers: Martial Training, Acidic Body, Immune to Weapon Damage.
Personality: Focussed creatures who follow their masters instructions to the letter.