Why cant ben control alien X?

Answer 1

Because he's not the only personality of Alien X. Inside Alien X is Serena, the voice of love and compassion, and Bellicus, the voice of rage and aggression, then obviously there is Ben, the voice of reason. Serena and Bellicus have been in a political deadlock for centuries and desperately needed a tie breaker. Both of the personalities always put everything to a vote. They even need to put it to a vote to move the slighest muscle. Which to Bens dismay, they refused almost everything he suggested until he hurt Serena's feelings by saying "I have 9 other guys who can do the job better." Then they let him go.