Think-Tank was the ruler of the Martian planet. With a large egg-shaped head and a long robe adorned with stars and circles, he had an unusual appearance that set him apart from humans. Despite being a dumb leader, he thought of himself as intelligent and never accepted any of his errors. Instead, he persuaded others to proclaim him the universe's most intelligent being. He lacked common sense, unlike Noodle, and only understood things superficially without analysing or taking into account their actual purposes, which ultimately contributed to his failure.