Satan

It is not necessary that Satan is depicted evil, in fact he could be depicted as pre-fall angel, or redeemed one even. And he might simply not be as evil as fiction has made him to be in general. Of course, he could be also as evil or worse. This all saying, none of this matters whether this tag applies or not.

The Bible does not actually make it clear in any manner that Satan and Lucifer are the same person (there's no link), thus this should not by itself mean that the depicted Satan is Lucifer, but due to popular image of him as such it is acceptable for inclusion into this. Not to mention this is for analogs also, so the point on Christian mythology is somewhat moot.