User blog comment:DoctorAsawa/Champion Faction Updating/@comment-8506165-20130810064750

Eh... not every evil character has to be either Void or Shadow Isles aligned. Look at Zed, he's Ionian but he's arguably lost his humanity entirely with his devotion to the forbidden arts. And Swain's an odd sort who travels around with a raven on his shoulder and transforms into a giant demon bird but he's just Noxian. LeBlanc's hinted to be some kind of immortal being that shifts from body to body, also Noxian.

As for Maokai, his story is based on him hating what the summoners' magic did to the jungle (animating him amongst other things). The League has no presence in the Kumungu Jungle. The only place they could really move him would be the Summoner's Rift jungle, but there's not really any reason to move his origin to there from the TT jungle.

Shaco's just unhinged. Zaun has a few other madmen mentioned in LoL lore so I guess he'd fit in. But I think part of his story is meant to be that he's just so utterly demented and his background so mysterious that he could even be otherworldly in some way. Admittedly, the lore also says it's more likely that he's just an insane assassin-for-hire, but it adds an interesting little what-if and accentuates how totally psychotic he is more than him just being "some guy from Zaun", imo.