Originally Posted by Steelmill
Oh, last one from me,
Veigar = Vivi from Final Fantasy
I'd say Veigar is a black mage from Final Fantasy, not just Vivi.
The commando skins are a big nod to Warhammer 40K's Imperial Guard (Lux's helmet, Garen's armor, Jarvan's cap and the like), but that's fictional.
Mordekaiser is a walking reference to heavy metal music.
But the only other Champion I can think that is connected to real life is Xin Zhao, who looks and has a story similar to Zhao Yun from the Three Kingdoms period of China.