Re: the good monster

For mythological examples, I would maybe put Cassandra and some Bible prophets, as both essentially good and yet feared and despised, but they were not really monsters but gifted humans... (X-Men?) The intellectual father of the Occupy movement, Prometheus, is good to humans, and despised for his rebellion, but he was certainly not feared, neither by the humans he helped nor by the 1% . Obviously, in most mythologies there are characters which are entirely or mostly good but I don't remember offhand any who are simultaneously feared or despised; apparently humans knew only to fear the bad guys... However, I would say the most recent ( I think it is the most recent) zombie movie by Romero (since all the titles are the same, don't ask me for a title) leans to that direction: by the point in time described, the rump human society lives isolated and fortified against the zombies who essentially control the rest of the land (or at least of the Pittsburgh metro area); but by then the zombies too are living in an incipient parallel society and little by little it is hinted that some sentience / intelligence remains in them. The ending leaves no doubt that at least some zombies were more interested in just being left alone than in hunting heads - though also that they would resort to hunt heads in retaliatory action...

I would also mention, although obviously my perspective is doubly biased, that a little of the "new" vampire (AND recent zombie) themes remind me of the mistrust for Muslims in the West - both the "convert or kill" ethos combined with the self denial, and compounded by the existence of different factions each devoted to either position.