This is a list of characters that were introduced in CBBC's The Dumping Ground. The series is based on The Story of Tracy Beaker by Jacqueline Wilson. It has aired since 2013 and has aired ten seasons so far. The series follows The Story of Tracy Beaker which ran for five series from 2002 to 2005, and Tracy Beaker Returns which ran for three series from 2010 to 2012. Connor Byrne has played the role of Mike Milligan for all four programmes, although he left in Series 7 Episode 24 to live with his family in Ireland. He returned in the last episode of the last season of The Beaker Girls.