- Main article: Creatures (Thieves Guild)
Sep Adder is a creature that appears in The Elder Scrolls Online: Thieves Guild. They are small winged snakes scattered throughout Hew's Bane. Sometimes they can be found hunting mice and chickens for food. When killed, they drop small game.
- The statue Hubalajad's Reflection depicts Prince Hubalajad with a large Sep Adder wrapped around him.