Notes:

Artist: Matsu-sensei / graphiteknight
Tumblr (w/ full size images)
Also, source may contain images that could be considered NSFW, but that page is safe.

Edit: Inspired by -this video-
OP Edit: Don't throw your assumptions in without even checking the source. The artist said his shield shattered so he had to charge, which does NOT happen in the clip. You insult me.
"Inspired by true events. (my shield shattered so I had to charge the mech)"
This is a true hero… and something Reinhardt would totally do, too.
Meanwhile, I've seen a video with one part being a Reinhardt charging into a D.Va ult and brought the nuke TO his teammates, killing them all.
Also, I personally have been trying my best to (awkwardly) counter with Roadhog to hook the mech into pits on Control maps like Ilios and Nepal. I keep falling into the pits myself, though… (I never did that in beta… they must've implemented ice physics, obviously). I'm a(n) hero.

Alternate ending: