- "Stay super, bro."
- — Arthur Curry, Aqua
A.C and Clark started out as disliking each other, but then became friends and co-workers in the Justice League team.
Clark's Secret
When Clark suspected that Arthur wasn't a "stand up guy" and was hiding something major from Lois. He then accidentelly revealed his powers to Arthur.
Season 5
When Lois Lane almost drowned, Clark went to go and save her life. He went under the Water, but saw another person rescue her before he did. This person was A.C, Arthur Curry. Clark was surprised when Arthur and Lois started dating and making out. Clark told Chloe about Arthurs swimming ability being better than his own, and Clark was rather rude to A.C in front of Lois and Lana.
He went to go apologise, but what he was really doing, was find out what A.C was really up to. Clark followed Arthur and discovered his plan, stopping his attempt to blow up LuthorCorp's marine facility by containing the explosion. This resulted in an underwater battle between Clark and Arthur, during which Clark was thrown out of the water. A later confrontation between Clark and Arthur in the Kent barn resulted in Arthur explaining his motives to Clark.
After both Clark and Arthur made an unsuccessful attempt to convince Lex Luthor to destroy the Leviathan project, Arthur went down to do the job himself but was captured by Lex, who had seen a video clip of him investigating the Leviathan underwater without scuba gear. After being shot by a tranquilizer dart and deprived of water, seriously weakening him: Lex even commented that he shouldn't have been surprised at Arthur's abilities given his friendship with Clark, but Arthur claimed that Clark knew nothing about his powers. Clark arrived and replenished Arthur by turning on the lab's sprinkler systems, after which the two of them were able to destroy Leviathan during Lex's attempts to demonstrate it to the Pentagon.
During another meeting at the barn, Arthur suggested that he and Clark form a 'Junior Lifeguard Association', but Clark mentioned that he wasn't ready to join the 'JLA' just yet, advising Arthur to be careful as Lex was now aware of his powers: Arthur simply pointed out that the world was three-quarters water, as well as told Clark to stay super before he departed. Arthur left town to freely roam the high seas, after saying an emotionally-charged good-bye to Lois at Crater Lake.
Season 6
"So how's Lois doing man?" -Arthur
Arthur Curry returned to Kansas as a member of Oliver Queen's team of heroes. Arthur was recruited by Oliver Queen when he was in Japan where Oliver saved him from "ending up in a thousand tuna cans". With Bart Allen and Victor Stone, they hope to bring down Lex's Level 33.1.
While Green Arrow went to rescue Clark, Aquaman and Cyborg conducted their own part of the mission. Aquaman broke into the facility via waterway, knocked out the guards and met Cyborg inside where they both set up explosives.
Once they freed the patients of the project and rescued Bart and Clark, they blew up the facility of LuthorCorp. Arthur joined the Justice League in finding other divisions of 33.1 around the globe.
Season 8
Arthur reappeared in the Arctic, along with Dinah Lance and Oliver Queen, in search of Clark, who had gone missing after the Fortress collapsed. They were unsuccessful in locating him, but they did find his jacket in the ice.
Unbeknownst to them, their actions against LuthorCorp who was also in the Arctic searching for Lex, would cost them. Using Chloe and her new found powers: LuthorCorp attacked Arthur and Dinah and then took them prisoner. Transferred to the same prison as Chloe, Arthur and Dinah were interrogated on the matter of Green Arrow's location, but they wouldn't say. The newly-found Clark and Oliver arrived in time to save them. Though they were rescued, they decided with the new threat of Tess Mercer, it was best if they split up for the moment and wait for the time to strike.
Season 10
"You learn that vocabulary from Mera?" -Clark Kent in Patriot
Sometime later, Arthur met Mera, who became his wife and helped him understand his true origins and destiny as the king of the sea. The two of them worked as a team and when the Vigilante Registration Act was passed by the government, they learned that the government had been setting up containment facilities disguised as oil rigs all over the ocean. Arthur and Mera destroyed one of these which caught the attention of not only head of the Vigilante Registration Act, Slade Wilson, but also Arthur's own teammates, Clark and Oliver.
They questioned his motives and Arthur assured them he was doing what he believed to be right. Oliver signed the Vigilante Registration Act to learn more about it, but soon realized Arthur was right when Slade took him prisoner and subjected him to torture to learn more about the other heroes. Arthur and Clark set out to rescue Oliver but Arthur was taken prisoner while searching for him.
Mera arrived and rescued Arthur and Oliver before they all escaped. Arthur told Clark that he was going to have to treat Lois as an equal like he did with Mera for their relationship to work before parting ways.
Notes
- Like Bart Allen, Oliver Queen, Dinah Lance and Victor Stone, A.C attacked Clark when he met him. When Clark faced him underwater, he used a "water ball" to send him soaring out. (Aqua)