Miriam Pataki is the wife of Big Bob Pataki (Maurice LaMarche) and the mother of Olga Pataki (Nika Futterman) and Helga Pataki (Francesca Smith) in Hey Arnold. She is voiced by Kath Soucie, who also voiced Madeline Fenton in Danny Phantom (2004-2007), Fifi La Fume in Tiny Toons Adventures, Betty Quinlan in Jimmy Neutron (2002-2006), Dexter's Mom in Dexter's Laboratory, Wendy Darling in Return to Never Land, and Lola Bunny in Space Jam.