Crater Ape

Crater apes are primates genetically engineered long ago by The Preservers (or perhaps by the ancient ancestors of the Farsiders—it’s not entirely clear). Crater apes were originally used to perform heavy labor in parts of Farside City, under the psychic control and guidance of Farsider nobles. They were designed to absorb solar radiation, and thrive on it, enhancing their strength.
While Lady Lunar ruled Farside City, she turned the crater apes from a labor force into her mentally controlled enforcers and guards, using them to help keep the human population of the city in line. The apes served quite well in that capacity, until The Atom Family overthrew Lady Lunar and liberated the Farsiders.
The people of Farside City attempted to return the crater apes to their role as domesticated servants, but encountered difficulties. Lady Lunar gave them a taste for violence and a domineering attitude toward anyone except for her, plus there were virtually no mentats left to control them. The Farsiders faced some trouble with the crater apes and eventually isolated the population in a preserve. Efforts to re-train them have been slow (particularly without the aid of experienced telepaths), but are progressing.
Lady Lunar may have taken some crater apes with her when she fled Farside City, or shortly thereafter. She has at least once unleashed the crater apes on both Farside and Freedom City after driving them into a state of “lunacy” with her powers. The Atom Family was able to capture and contain the rogue apes and return them to their preserve on the Moon.
Crater apes make useful minions for whomever manages to capture and train or otherwise control some of them. Heroes visiting Farside City may also encounter them there.