Arthur "Fatboy" Chubb is a fictional character from the BBC soap opera EastEnders and its Internet spin-off EastEnders: E20, played by Ricky Norwood. He made his first appearance in EastEnders on 5 January 2010 before appearing in the spin-off. Fatboy is one of four main characters in the first series of E20 and makes cameo appearances in the second and third series. He was created by the EastEnders: E20 writing team during a BBC summer school in August 2009. He frequently uses London street slang and is described as brash, confident, caring, a hustler and a womaniser. Norwood won the Best Newcomer award at the 2010 Inside Soap Awards and Most Popular Newcomer at the 2011 National Television Awards for his portrayal of Fatboy, and has been nominated for two further awards. In 2014, Norwood was temporarily suspended from the soap for two months after a tape of improper conduct involving him leaked onto the internet. In November 2015, the character lost his nickname and was simply credited as Arthur Chubb from 20 November until his final appearance.

Zsa Zsa Carter is a fictional character from the BBC soap opera EastEnders and its internet spin-off EastEnders: E20, played by Emer Kenny. She is the daughter of Tina Carter. She made her first appearance in EastEnders on 5 January 2010 and appears in all twelve episodes of the first series of EastEnders: E20. The character was created by a team of 13 writers aged between 17 and 22 and is described as bright, sarcastic and a rebel. In May 2010, the character's departure from the show was announced; her last appearance was on 30 September 2010.