Athos, Porthos and Aramis
Athos, Porthos, and Aramis, model WEA-1, are the three original God Emperors created by Dr. Hebereke. They serve as the final bosses in Medarot 2 and its remake.
After their defeat by Ikki Tenryou and Dr. Hebereke's subsequent arrest, the three Medarots came into the possession of Kirara Akita, who frequently uses them in her guise as Retort Lady.
Other God Emperors also appear in Medarot R, AX, DS, and 7 as the Medarots of Medal God, Sakekaasu, and Dr. Hebereke. However, these are most likely different individuals from the original trio.
In the games
Personality
God Emperor does not exhibit traits of a humanized Medarot, instead behaving like a cold, unfeeling machine. In Medarot 2, Dr. Hebereke removes God Emperor's limiter, causing him to disregard the three laws of robotics and act with the intent to destroy any form of life. His dialogue, both before and after robattles, reflects his confidence in his own power, viewing those who challenge him as fools. He also reacts poorly to defeat and can easily become enraged.
It remains unclear if God Emperor's personality changes after regaining his limiter and becoming a Medarot under Retort Lady's control. At the very least, he no longer poses a threat to humanity.