I was wondering just many examples out there there are of necromancy being used for good, be that legitimately used for good or just merely 'good' or anywhere in between. Granted for the most part necromancy is often seen as just about the most unfathomably evil thing one can do that it might be hard to justify using it for noble purposes but given how popular 'bad is good' with protagonists and the like I can't imagine there not being some examples of such.
Personally, off-hand, the most solid example that I can think of is Johannes Cabal. Granted he's far from a hero or even really hero material but rather more of a lesser evil that happens to be at odds with whatever bigger evil might be going on and he doesn't like it when things get in his way.