Pentakill Champion Skins inspirations?

Well, as some might have noticed several characters draw inspiration from famous metal musicians.

Pentakill Yorick is the spitting image of Slash. Olaf draws Heavily upon Lemmy Kilmister Karthus shares some attitude and visuals with Ozzy Osbourne.

So what about Sona, Mordekaiser and Kayle? I feel like Kayle may be loosely based on Vanja Obscure but that is a long shot. Any ideas?