Aquaman

The king of the lost city of Atlantis, Arthur Curry is also the superhero Aquaman.

History
Aquaman roamed around the world, from city to city, encountering heroes such as The Flash in Central City, Booster Gold in Metropolis, and even Samurai and Manhunter in Japan. He finally settled down with a spot on the Justice League after helping them against the Hyper Clan.

During the Justice League's rematch with Superboy-Prime, Aquaman stayed behind on Earth along with Supergirl and Red Tornado. It was at this time that the Tornado Tyrant persona presented itself within the Red Tornado and began to wreak havoc in Europe after destroying the Watchtower. Aquaman's mental powers allowed him to detect the two conflicting personalities within the Tornado Tyrant's mind, which led to Supergirl finding the ex-supervillain El Dorado in order to use that cognitive dissonance to their advantage, allowing them to defeat the powerful air elemental.

During the League's successful attempt to overthrow Mongul, it was Aquaman who came up with the plan to physically blind him. He and Wonder Woman successfully used their magic-based weapons (his trident and her sword) to gouge out his eyes.

Since Superman's departure from the team, Aquaman has assumed the titular role of team leader.

Personality
Aquaman likes to get down to business. He is a calculating warrior, and always ready to do what needs to be done.

It would seem as if he is sometimes at odds with Batman over the affections of Wonder Woman, but as it now stands she seems to be content with both of them being just friends.

Quotations

 * 1) Aquaman: I eat fish.