Gods?

Does the stock 1.5 come with "gods"? Meaning I'm going from a text mud and turning it into a 3D version. In the text mud, which uses Circlemud code, the "gods" or "immortals" are unkillable..untouchable really..by mobs and players. Reason being, sometimes we are working and don't want to be hassled by death by every player, etc. If we have to get somethign a player lost during death (rare times when we are feeling SUPER nice) we don't want to have to worry about the big, mean, red dragon which can obliterate a party of 8 well equiped fighters, clerics, magi, and thieves when all we want is to get somethign that is rare for them. If not, I'm sure it can be coded into play, but I was just wondering if it was something that came standard or not. Thanks :)