User blog comment:JoshQuest1/What AI's are which?/@comment-4680509-20120715075027

Starting clockwise from delta: Delta, Sigma, Gamma, Omega, unknown, Theta, and Tex.

The meta symbol is all the AIs he (sigma) needs in order to achieve metastability (hence the name "Meta") Maine had nothing to do with any if this, Sigma wanted to achieve the meta stage, whereas an AI can, in theory, be considered a being. Sigma and the other AIs more or less took over Maine and used him, much as Omega did to Doc/Caboose, but Sigma, Alpha's creativity was able to control Maine.