Brayden Denton, from Indiana, tragically died of a brain tumour earlier in May - and his mother Staci couldn't face giving the youngster a traditional all black funeral.
Instead, his tiny coffin was carried by mourners who were dressed as his favourite comic book heroes: Batman, Superman, Spiderman, Thor, The Hulk and Iron Man.
The five-year-old had been battling cancer since April 2013, with his mother saying he always carried a superhero with him when he went in for treatment.
'I felt like I was honouring him in a way that if he was looking down on us he would be happy,' she said of the day.
His uncle Cory, who posted the photos, said that he would remember Brayden every time he watched a superhero movie, and that: 'I'll always watch them with him because he is always with me.'
Brayden was suffering from a type of cancer called Diffuse Intrinsic Pontine Glioma, which is terminal in 100 per cent of patients.
'This cancer does not have a survival rate' said cousin Cory.
The family have donated Brayden's tumour to cancer research, in the hope that a cure or treatment can be found.