Looks like he is just an urban outdoorsman with a penchant for Karate Kid moves. It would have been sweet to just include him, throw a tux on him (just the jacket, have him stay shirtless and in those pants) and put him in the wedding party, that story would be told at museum for fifty years by all attendees and the video would become an instant youtube sensation.
I say take him to the reception too, it’s so hard getting the dance floor going at weddings as it is.