 Fatboy first appears in EastEnders at Lucy Beale 's ( Melissa Suffield ) party , where he gets pleasure from watching a fight between two girls , and asks other girls to play Twister with him but nobody will . In EastEnders : E20 , he helps his friend Mercy Olubunmi ( Bunmi Mojekwu ) with a project to encourage more young people to the church , but his ideas leave them both humiliated . They meet Leon Small ( Sam Attwater ) and Zsa Zsa Carter ( Emer Kenny ) and start squatting in a flat . Fatboy tells Zsa Zsa and Leon both his parents were killed in a drive @-@ by shooting . He finds out Mercy is pregnant and accuses Leon of being the father . During an argument , Mercy reveals that Fatboy 's parents are alive , angering Zsa Zsa , who throws Fatboy 's laptop out of the window . On their last night in the flat , he arranges a party but leaves before the police arrive . Knowing they can no longer stay there , he invites Zsa Zsa , Mercy and Leon to stay at his house in Wanstead , but Mercy decides to go home to her grandmother . 
