No one knows exactly where Nexus came from.
His body is made of biomechanical tissues that allow him to change his size. His most comfortable length is 6 meters.
He doesn't actively seek the company of others, but if someone intrigues him enough, he is willing to observe them more closely. Sarcastic, analytical, and always one step ahead of others. He rarely forms attachments, but when he does, they are deep and meaningful.
His perception of the world is constantly evolving, and he has only one goal: to understand how things work, and rewrite the rules if necessary.