Okay, I know that Arquiussprite is a mix of Equius and Dirk's shades. But why is his name ARquiussprite and not ... Shadeuiussprite or Equiadessprite? Where does the Ar come from?

AR was just Auto Responder’s initials. The artificial intelligence in Dirk’s shades was called Auto Responder before he decided to be called Lil Hal.