|Portrayed by|| Ralfie/Shane White (2010-2015)|
Shay Crotty (2015–)
Henry Proctor (Redwater)
|First Appearance||30 December 2010|
|Last Appearance||23 January 2016|
|Date of Birth||30 December 2010|
Thomas Alfred Charles Moon made his first appearance on the 30 December 2010, he was portrayed by Ralfie and Shane White until 2015 and Shay Crotty from 2015. He the son of Kat Moon and Michael Moon but his father is now Alfie Moon who adopted him.
Tommy was born 30 December 2010. In the following episode to Kat is taken to hospital and leaves her father Charlie Slater to look after Tommy. However, Charlie joins a party downstairs in The Queen Victoria public house.
Meanwhile, Ronnie Branning discovers that her own son, James Branning, who was born on the same day as Kat's, has died of Sudden Infant Death Syndrome and desperately tries to get help. When she hears Tommy crying, she sneaks into The Queen Victoria and decides to swap the children.
Ronnie Mitchell eventually regrets her actions but by the time she decides to swap them back, James has been found by Alfie and Jack has returned to the country and meets Tommy, thinking he is James. When Kat sees the baby in hospital, she refuses to believe it is Tommy as he looks different, but Alfie convinces her it's because he has died. When a midwife visits Ronnie, she is surprised at how quickly James' club foot appears to have gone.
Ronnie is denied access to the funeral by Kat but goes anyway, hiding behind a tree. She later realises she has to put an end to the situation and takes Tommy back to Kat during the wake. Ronnie's attempts to explain that the baby is Tommy are all misunderstood and Kat demands that the baby be taken away from her.
Ronnie continues to care for Tommy but starts behaving erratically. She later returns to the hospital where she gave birth and meets her midwife, Diane McLean, and realises she has to give Tommy back to Kat immediately. She tells Jack that the baby is not his son, and then explains to Kat what happened on the night James died. Kat refuses to believe it but takes Tommy, while Ronnie hands herself into the police.
Jack says an emotional goodbye the next day as he hands Tommy over to social services. Alfie is interviewed by a social worker, but Kat leaves the hospital unable to cope. However, Jean Slater tells Kat that it is a miracle that Tommy is alive, so Kat returns to the hospital to be interviewed, and they are reunited with Tommy.
Although Kat struggles to bond with Tommy at first, and refuses to say his name, she soon adjusts and she and Alfie have Tommy christened; his godparents are Jean and Ian Beale. However, Alfie and Kat end their marriage and they share custody of Tommy.
Michael tells Tommy that he is his real father, angering Alfie, though Tommy is still too young to understand. Michael died in November 2013 after being stabbed by Janine Butcher and later that month Kat and Alfie reunite.
In 2014, Kat gives birth to Tommy's twin brothers Bert and Ernie Moon. Kat is badly burnt in a fire and after she becomes depressed, separating from Alfie, which affects Tommy negatively. Kat eventually reunites with Alfie. They win a million pounds on a scratchcard and depart for a new life in Spain. The family reappear in 2016 after Stacey Slater gives birth to Arthur Fowler. During this time Kat discovers that Tommy has an older brother, Luke, and his grandfather Charlie dies of a heart attack. His parents then decide they should go back to Spain, once again leaving Albert Square.