Ian Beale is one of the original EastEnders characters along with the cousin played, for a time, by which actress who played Dot in "Sunday in the Park with George"?
Jenna Russell
Title: Ian Beale
Passage: Ian Albert Beale is a fictional character from the BBC soap opera "EastEnders", played by Adam Woodyatt.  He is the longest-serving character and the only remaining original character to have appeared continuously since the first episode on 19 February 1985.  The character appeared in his 2000th episode in the show on 26 March 2007.  He is currently one of four original main characters in "EastEnders", the others being Ian's mother Kathy Beale (Gillian Taylforth), his cousin Michelle Fowler (Susan Tully/Jenna Russell) as well as his close friend Sharon Watts (Letitia Dean).  Woodyatt filmed his 3000th episode on 27 May 2016.
Title: Pauline Fowler
Passage: Pauline Fowler is a fictional character from the BBC soap opera "EastEnders", a long-running serial drama about working class life in the fictional London borough of Walford.  She was played by actress Wendy Richard between the first episode on 19 February 1985 and 25 December 2006.  Pauline was created by scriptwriter Tony Holland and producer Julia Smith as one of "EastEnders' "original characters.  She made her debut in the soap's first episode on 19 February 1985, and remained for twenty-one years and ten months, making her the second longest-running original character, surpassed only by her nephew, Ian Beale.
Title: Jenna Russell
Passage: Jenna Russell (born 5 October 1967) is an English actress and singer.  She has appeared on the stage in London in both musicals and dramas, as well as appearing with the Royal Shakespeare Company.  She performed the role of Dot in "Sunday in the Park with George" in the West End and on Broadway, receiving the Tony Award nomination and the 2006 Olivier Award for Best Actress in a Musical for her role.  She has also appeared in several television series, including "Born and Bred".
Ian Beale Jenna Russell