Shelby Marx

Shelby Marx is a famous MMA fighter in iCarly. She fights Carly in the movie "iFight Shelby Marx" and only appears in that episode, and is played by Zoey 101 and Victorious star Victoria Justice.

Character information
Shelby is a young yet extremely strong and skilled, martial arts fighter. When she was only 15, she became the female CFC-Champion of the world, making her the youngest person to ever win this title. Shortly afterwards, Carly Shay jokingly challenged her to a fight. On the urging of her manager, Shelby agreed to an exhibition fight for publicity and charity.

She usually is calm and friendly, but loses her temper when someone hurts her family. When Carly was accused of pushing her grandmother down, Shelby was ready to seriously hurt her although Carly wouldn´t have had the slightest chance to defend herself once Shelby seriously attacked her. When it was revealed that Nevel tricked her so she would beat up Carly, the two girls made up and beat up Nevel instead. To show the fans that they are reconciled, they invite Shelby on iCarly as a guest and they all hug and do a spit take segment for the show.

Despite the fact that the character is supposedly one of the strongest fighters, Marx does not show any visible muscle, which most fighters would have.