Helga Geraldine Pataki is a lead character on the TV series Hey Arnold!, and other media related to the series. She is Arnold's frenemy/rival/bully, whilst secretly harboring a crush on him, and later becoming his girlfriend. She’s also Phoebe's best friend. The name Helga is of Eastern European origin, which means "holy." In the series, Helga's sister is named Olga, which also means "holy." (The names Olga and Helga are variants (respectively, Russian and German) of the same name.) Helga Is 11.