E. N. Stein is a mad scientist Tech Deck Dude. He wears a labcoat and has a test-tube on his side. He has spiked up hair on both sides of his head, and he wears boots. His left eye is always a different color than his right.
- E. N. Stein's hair may resemble that of "Doc" Emmett Brown in the Back to the Future movie series.