Autômato is a nerd with a grudge against Ben. He was at comic con with Ben when a robot attacked. Since he could not get Cooper to build him one, he stole the one that attacked him. His new robot is a Techadon. He has appeared in a bunch of games and episodes. Even Ben, Ship, and Cooper cannot take him for good.
Autômato is always trying to get Plumber tech, like the CourtneyBot. He works with other alien dealers to get tech, and tries to get revenge on Ben.
Ben 10 Ultimate Team Tennyson
He joined Timeking's team after he quit The Negative 10 2.