 Fatboy begins running the car lot when Charlie leaves Walford . His friendship with Donna Yates ( Lisa Hammond ) grows and they have a one @-@ night stand , but , feeling it is making their friendship weird , he rejects her afterwards despite her thinking she might have deeper feelings for him . Things between them are awkward , and when Donna 's foster brother Vincent Hubbard ( Richard Blackwood ) finds out , he confronts Fatboy and locks him a cupboard . He returns the next day to find that Fatboy has not been discovered , and from how scared Fatboy is , realises something is wrong . Fatboy opens up about the fact his mother used to lock him up for extended periods of time , which led to him assuming the comedic persona of ' Fatboy ' . Vincent convinces him to use his real name , Arthur , again , and gives him a job as DJ at his bar The Albert as long as he no longer puts on a false persona , starting with admitting to Donna that he will now be showing his true self to her . Over the coming weeks , Fatboy gets tangled in Vincent 's vendetta against the Mitchell family and trying to kill Phil Mitchell ( Steve McFadden ) . Fatboy repeatedly tries to convince Vincent to stop , and interrupts Vincent when as he is about to throttle Phil . Fed up with his interference , Vincent threatens Fatboy with violence against Dot if he does not leave Walford forever . Fatboy tells Dot that he is going to see his father for Christmas , and shares a final dinner with her before saying goodbye . He confronts Vincent one last time , demanding that he stay away from Dot , and leaves Walford . 
