Arion is a fictional character from DC Comics' universe. Arion began as a secondary feature of the DC Comics book Warlord in issue #55 (March 1982). This continued until the October issue (#62) when Arion gained his own series written by Paul Kupperberg and drawn by Jan Duursema . The title character is a powerful mage from the nobility of ancient Atlantis. His companions include an Atlantean guardsman, Wyynde, and Lady Chian, his lover and the captain of King D'Tilluh's royal guard. Among his enemies are Chaon, the puissant god of evil and chaos, and his brother Garn Daanuth, a formidable practitioner of the dark arts. Arion, Lord of Atlantis only lasted for 35 regular issues from November 1982 to September 1985. There was a special finale issued in late 1985 in which Atlantis gets destroyed. Arion also appeared in DC Comics Presents November 1984 issue in a crossover with Superman.

He appeared later in the Crisis on Infinite Earths and was made part of Power Girl's backstory. He eventually turned up in the present day continuity of the DC Universe where his body was taken over by the Lord of Chaos Mordru and his spirit imprisoned in Gemworld. His spirit was finally released and allowed to go to the afterlife by Power Girl and Hawkgirl of the JSA along with a recently awakened Dove in order to weaken Mordru and to give the JSA a chance at fighting back at the Dark Lord and his allies. However before going onto the afterlife, he revealed to Power Girl that she wasn't really his granddaughter or an atlantean at all and that he was only charged by Power Girl's mother with keeping her safe and that her origin lies elsewhere.