Starfleet Admiral who has consulted with the Potemkin on many different occasions.

He initially contacted the 'Tem to inform them of the Wotal terrorist plot to destroy the Nerian sun and ordered the crew to help in the evacuation of Neria.

Warp later contacted him to file a formal protest about the rejection of the Kuvanahru's request to join the Federation. Although initially unwilling to help out, he promised to personally take it to the Federation Council. Later he contacted the Potemkin to let them know the decision had been over turned and the Kuvanahru could join the Federation.

He was later contacted during the medical mission to Klach D'Kel Brach and told Warp that the Federation could not get involved in rising hostilities between the Romulans and Klingons. At the end of that same mission, he informed the crew that Klach D'Kel Brach had fallen. After the fall of Klach D'Kel Brach, he had the fleet gather at Boreleias.

He was at the defense of Sol III and announced the arrival of the Ferenigi, and the USS Davenport with the Gorn.

Atherton gave the fateful order to attack and retake Qo'noS to the Potemkin and Gamma Group.