According to reports, the twins will no longer have a part in the show. Liam Gallagher; Shameless character; Portrayed by: Joseph Furnace (Series 1–2) Johnny Bennett (Series 3–8) Duration: 2004–2011: First appearance: 13 January 2004 Series 1 Episode 1 "Meet the Gallaghers" Last appearance: 12 January 2011 Series 8 Episode 2 "Missing" Created by: Paul Abbott: Introduced by: George Faber: Classification: Former; regular: Profile; Occupation Why did they replace Liam on Shameless ? Keep reading to find out!

Shameless (TV Series 2011– ) cast and crew credits, including actors, actresses, directors, writers and more. There are some fresh faces joining Chicago’s South Side for Shameless ’s eighth season, which premiered Sunday night. Christian joined the award-winning cast of Showtime's SHAMELESS in Season 8 in the role of Liam, the youngest member of the Gallagher Family. Shameless is set in Chicago's South Side and tells the story of an alcoholic father, Frank … Liam Gallagher is the youngest of six, and his role is played by twins, Brennan Sims and Blake Sims.