XOR

"'How poetic.'""-Gregori Makenchov, referring to XOR's second leaving."XOR is a protogen and the former vice president of the Union of Sol. After the May Election, he was very briefly and shortly elected as vice president. However, he was impeached by Micro and went missing in action, presumably leaving the union intentionally. Ruby did not speak of this; it is not known why.

In Chapter 2 of the Union of Sol, XOR returned via Ruby with discontented and bitter feelings about Micro. He made several insults and complaints to Micro's leadership, until being deliberately offended and angered by Micro into systematically leaving the Union of Sol once again.