After the departure of Thomas in 1983, Dan Mishkin took over the writing. Mishkin and Colan reintroduced the character Circe to the rogues gallery of Wonder Woman's adversaries. Don Heck replaced Colan as artist as of issue #306 (Aug. 1983) but sales of the title continued to decline. Shortly after Mishkin's departure in 1985 – including a three-issue run by Mindy Newell and a never-published revamp by Steve Gerber – the series ended with issue #329 (February 1986). Written by Gerry Conway, the final issue depicted Wonder Woman's marriage to Steve Trevor.
Phobos returned alongside his sister Eris in alliance with Circe. Circe had amassed great power by bringing gods of various pantheons together. Among them were the Roman gods, who challenged the Olympians for their domain. It took much strength for Zeus to summon Hermes and Diana to New Olympus, where the gods had been trapped. Earth's heroes were able to turn the tide against Circe, but three gods died: Circe killed Hermes; Harmonia was killed by her sister Eris; and Eris herself was slain by Son of Vulcan. Zeus and the Olympians decided then to follow the call of Cronus and the Titans to help guide other worlds in the universe. New Olympus was left to the Roman gods.
Hermes Action Comics #267 (August 1960) Hermes is the Messenger of the Gods, and the God of Thievery, Speed, Travel, and Commerce who is based on the god of the same name. Post-Crisis, Hermes was one of Wonder Woman's earliest allies. He was eventually killed by Circe during the War of the Gods, but Wonder Woman freed him much later from Tartarus. In the New 52, the bird-like Hermes was a close ally to Wonder Woman and aided in protecting Zeke, the reincarnation of Zeus. Post-Rebirth, Hermes took the form of a tortoise and aided Wonder Woman alongside several other gods.