Nice selection on Dr. Sun...I really liked him in Tomb of Dracula, as well as his other appearances in Fan Four and Nova. First I saw him was Easter 1987 when I received the OHOTMU Vol. 2 Book of the Dead in my Easter Basket and I tracked him down because he was such a unique character.

Nefarius--Uh, not so much.

Thunderbolt--Yeah, not a bad character, but if I remember correctly he was an old guy with hypermetabolism. If you replace him with someone younger, now we are talking. I would actually team him up with Quicksilver in a maxi-series.

Others I would like to see revitalized or brought back from the dead:
Bragadoom--One of those obscure villains in Marvel Two-In-One, was a plant monster of some sort. Thought that he would make for a good monster villain for the Man-Thing.

Ulysses Bloodstone--One of those characters that had tons of potential but was killed off way too early. Yeah, Elsa Bloodstone is pretty solid and a hottie, but she has not been utilized well to this point. Bring back daddy dearest not as her mentor, but as her worst enemy and you have an excellent storyline.

Basilisk--The original Basil Elks. Appeared in Nova last year and really made me want another appearance.

Black Knight II--The Masters of Evil one that died early on.

Hammer & Anvil--Old Hulk villains, were cons that were bound together by a chain. Alien gave the chain and H&A powers because he thought it was their mating ritual (funny as heck). One was a white supremacist, the other a Black Panther. It seems like a Siamese twin in which one head can't stand the other (imagine Monty Python and the three-headed knight). Would be hilarious with Deadpool.