In another blue post, Grug pointed out the glowing blue-green zombies in one of the new screenshots, and asked what was up with that. Bashiok explained:
[BLUE]
I was suddenly hit by inspiration after viewing one of the new screenshots. Number 7 shows some of the [WIKI]zombie[/WIKI]s in different lighting, giving them a ghostly and ethereal look. They also looked larger.
Those are champions! Champion packs receive a slight blue lighting effect to help distinguish them. And they will rock you. I die to champions all the time… It’s pathetic.
You’ll also notice in the next screenshot the next step, with the champions dead, and what they’ve left behind.
…Those are current [WIKI]health globes[/WIKI].
Did I say something somewhere saying something about them changing beyond this look? Maybe I confused myself.[/BLUE]
There were five types of Champions in Diablo 2; so far we’ve seen 3 of them returned in Diablo 3, along with one new type of champion. Full details can be found in the wiki.