First up we have a four (or is it five) for one: The Fantastic Four.
Yes, yes, I know, the FF have been done before, and they are not exactly what you would call obscure, but this FF has seen the light of day only twice, and these versions are from What If #6. Instead of the FF you know and love, we have Dragonfly, Mandroid, Ultrawoman, and Big Brain.
Speaking of brains, we have the enemy of The Original Original Doom Patrol, The Brain. For one issue (DP 110), he had a huge, glowing, energy body. Why he dropped it, I don't know, but here it is.
Finally, we have a request from the Obscure Hero thread: Magnaman!
Get 'em quick, before the server throws up again.