Eiffel was originally an AI created to help people on his home-world reach their true and full potential in order to do their part for their communities and for the planet as a whole. However when he had only begun his work, he was captured by a terrorist faction just so they could use him as processing power. With little control over what he could do, he had to watch as the very people he was made to care for, died from the plans and strategies the terrorists forced him to enact. Tired of being used as a weapon, he escaped with a medic named JUN-D0 who also could no longer handle the senseless violence. Both retreated together find a better life for themselves and away from the wanton bloodshed. While JUN-D0 kept a few of her crucial memories from the past years, Eiffel begged her to erase all of his memories or to destroy him, the ability to fully grasp the loss of innocent lives weighing too much on his conscious.

In his mind, all that's left now are memories of some scientists happily working on him and treating him like family, and one particular one sharing his love for music. That love for music passed on to the AI so whenever Eiffel has free time during his work on a cargo/supply ship, he takes his time to compose music of his own. However his shyness has prevented him from sharing it with anyone.

Right now, his life is good. He works a steady job, stays in touch with JUN-D0, and he even has a caring friend who's just as much of a dork as he is.