The carnitrix turned Ben into the ugliest, worst version of aliens, and he cannot even control them or even do anything. He cannot do anything except think, and I saw himself being killed and he regretted it. He found it during his summer vacation with his grandfather Max and his cousin, but he killed them by mistake using it. He cannot do anything until the Omnitrix is fully charged and returns to its human form, and the aliens have no Intelligence and They act according to their instincts