The Protomen are somewhere between this and Shrouded in Myth. With the band's facepaint, codenames, and some if not all members being robots, it's justified.
God created Earth. Chuck Norris created God. Rick Wakeman composed Chuck Norris while drunk out of his skull. His website has a number of good Rick Wakeman facts. (Got everyone in the studio to drink all day, barricaded the bathroom, then mic'd a echo chamber and got people to piss in it at the same time.)
Of course, Don Francisco taught Rick Wakeman everything he knew...
And Don Francisco was created because Earth Herself was bored...
MOTHERFUCKING SLAYER is the most badass band this side of Venom!
It's a scientifically-proven fact that Freddie Mercury didn't die of AIDS. Pure epic power simply overwhelmed his body and he ascended back to the higher plane of existence from whence he came.
King of the ocean! Master of the universe! Is it a bird? Is it a plane? No! It's Clarence Clemons!
And to purposefully one-up Chuck Norris, the music video displays CNR's trophy room, complete with the mounted head of everyone's favorite Texas Ranger.
Studebaker Hoch, superhero of the modern economic slump. Unfortunately for him, he forgot an important fact: [[you don't fuck with Billy the Mountain]].
Most Dream Theater videos on YouTube have exaggerated facts about their playing skills in the comments, but John Petrucci gets the most, partially due to the popularity of the John Petrucci Psycho Exercises videos.
Angela Gossow of Arch Enemy has this reputation, and to a lesser extent, so do all female artists who scream or growl in metal and metalcore bands (see the vocalists for The Agonist, Otep, Walls of Jericho, and Straight Line Stitch for more examples.)