Olga is a blue ice cube, kept inside a dome to prevent her from melting.
Role in the show
Despite only being a block of ice, Olga is part of the plot in several episodes. The episode "Let's Play Tutus Galore" was about Olga's birthday. In some episodes, the other characters kidnap Olga to blackmail Olaf. In "Let's Play Frosted Christmas", Olga melts, only to be saved by Quack Quack .