Elizabeth Ann Guttman (born September 11, 1961), better known as E. G. Daily and Elizabeth Daily, is an American actress and singer. Daily is best known for her animation voice roles as Tommy Pickles on Rugrats and its spin-off All Grown Up!, Buttercup on The Powerpuff Girls, Rudy Tabootie on ChalkZone, and Julius on Julius Jr. She also voiced the title character in the live-action film Babe: Pig in the City and Bamm-Bamm Rubble in the live-action film The Flintstones. Daily is also known for her roles in a variety of live-action films such as Valley Girl, Dogfight, No Small Affair, Fandango, Streets of Fire, The Devil's Rejects, My Sister's Keeper, and Pee-wee Herman's would-be girlfriend in Pee-wee's Big Adventure. As a singer, Daily has released four studio albums: Wild Child (1985), Lace Around the Wound (1989), Tearing Down the Walls (1999), and Changing Faces (2008).

Nolan North (born October 31, 1970) is an American actor most notable for his voice acting roles. After his breakthrough role as Dr. Chris Ramsey on the ABC soap opera Port Charles in 1997, North moved into voice acting when the show ended in 2003 and has since become best known for his video game roles as Nathan Drake in the Uncharted series, Dr. Edward Richtofen in the Call of Duty Zombies mode, Deadpool in various Marvel Comics media, Merasmus in Team Fortress 2, Desmond Miles in the Assassin's Creed series, the Penguin in the Batman: Arkham franchise, Capt. Martin Walker in Spec Ops: The Line, David in The Last of Us, himself as one of the voices for the U.S. President in Saints Row IV, Tony Stark in Marvel's Avengers, and Ghost in Destiny, and Destiny 2. In animation, North voices Smokescreen on Transformers: Prime and Superboy on Young Justice.

Maurice LaMarche (born March 30, 1958) is a Canadian-American voice actor, comedian and impressionist. He has voiced Egon Spengler in The Real Ghostbusters and its follow-up Extreme Ghostbusters, the Brain in Animaniacs as well as its spin-off Pinky and the Brain, Big Bob in Hey Arnold! (1996–2004), and a variety of characters in Futurama.

Rob Paulsen (born March 11, 1956) is an American voice actor. He is best known for his roles such as Raphael and Donatello from the 1987 and 2012 animated series respectively of Teenage Mutant Ninja Turtles; Yakko Warner, Dr. Otto Scratchansniff, and Pinky from Animaniacs and Pinky and the Brain; Carl Wheezer from Jimmy Neutron: Boy Genius and its spin-off television series The Adventures of Jimmy Neutron, Boy Genius; Peck the Rooster from Barnyard and its spin-off television series Back at the Barnyard; Spike in The Land Before Time films and television series; and the title character in The Mask: Animated Series. In total, Paulsen has been the voice of over 250 different animated characters and voiced over 1,000 commercials. He received a Daytime Emmy Award for Outstanding Performer in an Animated Program and three Annie Awards for his role as Pinky.