Sebastian is very strict when it comes to following rules, especially when the rules are given by King Triton himself. He is also very loyal, albeit afraid, to his King and will do anything for him, even when asked to stalk Ariel, as he reports to him periodically on the ocean's state and Ariel's behavior. He also cares deeply about Ariel, often reminding her how bad the human world is and will try everything to stop her from getting there. In the original movie, Sebastian followed Ariel to the human world to try to save her. He can also be seen as Ariel's "conscience". He is very passionate about music and is often trying to lift up the undersea creatures' mood by singing or conducting an orchestra. He also has a tendency to let things slip out of his mouth.