The Gargoyle one of the rarest enemies in Dark Castle, they only appear in the black knight levels, and show up in Dark Castle, Beyond Dark Castle, Color Dark Castle, Dark Castle Mobile, and Return to Dark Castle.
If this enemy touches you, you are thrown in the dungeon.
For killing a Gargoyle you get 150 Points.
The Gargoyle has stayed looking the same since the original Dark Castle, with the only real changes being color. However the color has changed a few times.