Dean Egghead is an Atavist, an evolutionary throwback to the time before man communicated through speech. He is the founder of Dean Egghead's Academy for Superheroes. After most of his staff quit because of the unruly students, he looked for super heroes to fill the teaching positions, such as the Justice League of America and the Doom Patrol. However, everyone turned him down. Left with no other option, he hired the Inferior Five to be teachers, even though they predictably had very little luck. The parents of the Inferior Five, the Freedom Brigade, eventually took over as teachers and have been teaching at Dean Egghead's school since.
- Telepathy: Dean Egghead is an Atavist, an evolutionary throwback with traits that were present in humanity's ancestors but are gone now. Egghead is a telepath, a throwback to before proto-humans developed speech and instead communicated telepathically. Egghead can read minds and send and receive telepathic messages. There is no evidence he has further telepathic powers, such as mind control, emotion control or mind wiping.
- Dean Egghead is a pastiche of the Marvel Comics character Professor X (Charles Xavier).
- This version of Dean Egghead, including all history and corresponding appearances, was erased from existence following the collapse of the original Multiverse in the 1985–86 Crisis on Infinite Earths limited series. Even though versions of the character may have since appeared, this information does not apply to those versions.
- 1 Appearances of Dean Egghead (Earth-Twelve)
- 2 Images featuring Dean Egghead (Earth-Twelve)
- Quotations by or about Dean Egghead (Earth-Twelve)
- Character Gallery: Dean Egghead (Earth-Twelve)