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The guy in the suit is actually the boy's father who wanted to surprise his 5-year-old son Jayden with something special.
Just a few days earlier, the young boy was diagnosed with a Grade 4 Brain Stem Tumor. He was given just one year left to live.
"Today he is still with us fighting it all the way, but at least he has Spider-Man to take care of him," his dad wrote on the YouTube page.
Commenters on social media are calling him dad of the year.
You can read more about Jayden's story on his Facebook support page.