Now that you have some more context of the world, come up with a backstory for Ryuuto. For example, was he originally part of Project Myrmidon in which case he'll be familiar with some of the CETM personnel already and Major General Tsukamoto would have been his former superior officer. Or maybe he's a complete newcomer from the actual JSDF or even the US military, possibly with secret orders to spy on CETM. Let me know if you need more setting info, I'm happy to help brainstorm.

As a pilot, Dr. McCulloch will be Ryuuto's direct superior. Your mech will also be directly linked to the supercomputer, Omniac, who will provide technical support.

Feel free also to suggest your mech's (referred to as a 'Colossus') load out and provide an image if you would like.