In the coming months, Ross will join his former soap sister Danniella Westbrook as they return to ‘EastEnders’ as Grant and Sam Mitchell, for the funeral of their on-screen mother, Peggy, played by Barbara Windsor.
However, The Sun have reported there could be a shock in store for Grant when he arrives back in Walford, as he comes face to face with his secret son, Mark.
The child was the result of a one night stand he had during the 90s with his ex-wife’s Sharon's best friend, Michelle Fowler.
According to the newspaper, Mark - now aged 20 - is tipped to arrive back on the scene for the wedding of Martin Fowler and Stacey Branning, which could come as a surprise to his unsuspecting father.
In typical ‘EastEnders’ fashion, though, bosses are giving precisely nothing away about what’s in store for Grant.
A source (helpfully) told The Sun: “There is so much history with the Mitchells. But bosses aren't giving anything away about what they have in store for them."
It was first confirmed that Ross and Danniella would be reuniting with their on-screen brother Steve McFadden, who plays Phil Mitchell, back in February, shortly after Barbara’s impromptu return to the soap, when Peggy announced she has terminal cancer.
Executive producer Dominic Treadwell-Collins said at the time: “Danniella is the final piece of the Mitchell jigsaw puzzle, so it will be great for viewers to see Phil, Grant and Sam all back on screen.
Re-live some of Peggy's most iconic 'EastEnders' moments below...