He is one of the few at Chryse Guard Security who had no prejudices against the boys of the Third Group. In fact, Dexter actually sympathizes with the boys, but refused to show it due to the other First Group members' intimidation.
The chief accountant of Chryse Guard Security (CGS). When the CGS' Third Group reform the organization into Tekkadan, Dexter wanted to leave but was asked to stay on due to his expertise in accounting. He later became the treasurer of Tekkadan’s Martian headquarters.