Alexa

Alexa wants to be President when she grows up. Why does she think she's qualified? Running the free world has got to be less troublesome than keeping her friends Carlos and Rad from killing themselves every day.

[Spoiler] Soon after the defeat of Unicron and the reunification of the Cybertronians under the Cybertron (Autobot) flag, Alexa travelled to Cybertron as part of the human delegation.

Ten years later, she worked as a diplomat on behalf of the Earth Federation, usually as a liaison between the nations of Earth and the Cybertronian Cybertron-Destron (Autobot-Decepticon) alliance. [/Spoiler]

(Source: Transformers Wikia)