Polari is Rosalina's adviser and the quadragonist of Super Mario Galaxy. Like Rosalina, Polari and the Lumas also help Mario in his quest throughout the galaxies and rescue Princess Peach from Bowser.
He is voiced by Yuya Takezawa.
In Super Mario Galaxy
Polari first appears in Super Mario Galaxy and Mario or Luigi talks to him in the Observatory and checks the map of the Observatory or the universe.
In Super Smash Bros
Polari plays a much larger role in Super Smash. Bros. 4 and Super Smash Bros. Ultimate. His voice is unchanged with the other varients of the Lumas, but still acts as a playable character.