Helen Poulos is the mother of Leah Patterson-Baker and her brothers Alex Poulos, Chris Poulos and Dimitri Poulos, she is married to Theo Poulos. She was played originally by well-known actress and Prisoner star Peta Toppano in 2000, when she and Theo arrives for Leah's wedding (storyline) to Vinnie Patterson but when the character returned in 2009 she was now played by Ann-Maria Monticelli.