|“||Back where I come from, we have men who do nothing all day but good deeds. They are called Phila... eh, Phila... eh, good-deed-doers.||„|
|~ The Wizard of Oz explaining about philanthropists|
They can be humans who want to look out for other humans.
They can also be humanoids, animals, robots, aliens, and in rare cases, monsters, who want to keep humanity safe from dangers they don't even know about.
They are the exact opposite of Misanthropes, villains who have a hatred of humanity and seek to eradicate it.