Day Man!

Ahhh ah ahhhhhhhhhh!

Champion of the sun!

Fans of FX's It's Always Sunny in Philadelphia will recognize the tune immediately as it's one the show's highlight moments. The song, originally developed for Charlie and Dennis' band, which later Charlie turned into a full-on musical, "The Nightman Cometh". YouTuber Albert Lopez figured there were too many coincidences between the newest Batman v Superman trailer and decided to make it a little more...chipper.

Sadly, no Danny DeVito as the Penguin/Troll for good measure.

If you want to watch out an original, live performance of "The Nightman Cometh", check it out right here, but mind you it is extremely NSFW.