Aqualad is a fairly noble-hearted, charming, calm and collected individual. He is extremely intelligent and a super genius. He and Robin are the two most intelligent geniuses on the show. He has his doubts, but does not disrespect an authority's commands. He is fairly competitive, especially with Beast Boy, and is confident that he can accomplish whatever he sets his mind to. Aqualad does not seem to notice his good looks, and instead of bragging about it or trying to impress girls, he feels rather uncomfortable with girls who are infatuated with him. Beast Boy thinks he is a little arrogant with all the bluffing.

Aqualad is shown to have a strong fondness for sea creatures, especially fish. When presented with fish tacos from Speedy, Aqualad freaked out, stating that "those were probably friends of [his]!" and feels sick.