The football legend revealed last Sunday that he had ended up in hospital joking that Manchester United’s painful 5-0 defeat to Liverpool had put him there although did not disclose what was wrong.
While Rio hasn’t divulged any of the details, he headed out for Halloween confined to a wheelchair.
In a picture shared to Instagram, the former Man United ace was unrecognisable beneath impressive skull make-up as he gripped a scythe for his creepy Grim Reaper costume.
Beside him was wife Kate Ferdinand, who had glammed up to emulate the iconic Disney villain Cruella De Vil.
Rio captioned the post: ‘Happy Halloween 🎃 Been in hospital all week, promised the kids I’d dress up….even if it was for an hour & in a wheel chair 👀😂👻.’
Former footballer Ashley Williams was among those commenting, writing: ‘A dad’s gotta do what a dad’s gotta do.’
Rio also shared a picture of the family, ‘minus one son’, with baby Cree sitting on his lap in a Dalmatian costume.
Rio’s 11-year-old daughter Tia, who he shared with late wife Rebecca Ellison, was also dressed as a Dalmatian, while one of his sons, believed to be 12-year-old Tate, wore a robe and a crucifix.
Over on her own page, former Towie star Kate shared a further look at their costumes, and wrote: ‘I don’t play when it comes to my fur-babies.’
The 30-year-old wore a spotted fur jacket over a slinky black dress, teamed with red boots, a spotted wig and dramatic face paint.
Rio Ferdinand slams Solskjaer’s ‘aimless’ Man Utd tactics from his hospital bed
While Rio spent an hour out with the family before getting some rest, Kate stayed out on the town, and shared snaps from a raucous after-party she attended.
The couple got married in September 2019, with Kate becoming stepmum to Tia, Tate and 14-year-old Lorenz.
Their first child together, Cree, was born in December last year.