[2] One of Bad Man's catchphrases, "No Leaving Without Learning," sums up his attitude towards the kids and his role in the show.
Sad Man, a dated, uncharismatic, leather elbow patch wearing alter ego of Bad Man from the seventies, regularly interrupts Bad Man's programming with informational broadcasts that help the kids learn how to leave the mansion and teaches the lesson to the kids watching the show.
[4] Sad Man brings with him several minor characters such as Decimole and Snorter the Pig, a collection of puppets.
[2] Sad Man also occasionally has other alter egos himself such as Angleman, who is the namesake for one episode 5 of season 3.
[6] Season 4 is focused on geometry, specifically shape, space, and problem solving using those ideas.