Mr. Rogers was a Navy SEAL
"Mister Rogers Neighborhood" host Fred Rogers was an educator, a minister, and a public advocate of quality children's television. He was also one of the nicest, gentlest people to walk the Earth. Because of his wholesome persona, Internet trolls love to spread dumb rumors about how he was a cold-blooded killer or a child molester prior to his PBS days. (The character Mr. McFeeley, who shares Rogers' middle name, was probably to blame for that last one.) One popular urban legend has it that prior to his career in broadcasting, Fred Rogers was a decorated Navy Seal in 'Nam and wore his trademarked sweaters to cover up his multiple military tats. According to another rumor, he was a badass Marine sniper who sent his targets to that great "land of make believe" up in the sky. No wonder Daniel Striped Tiger was so docile.
Why it's dumb: While it's amusing to think of Mr. Rogers as a real-life Chuck Norris, Fred Rogers never served in the military and was too old at the time of the Vietnam War to have enlisted or been drafted into combat. He went straight from college to a career in broadcasting, all while studying to be a minister on the side. In fact, Rogers appeared before Senate in 1969 to protest President Nixon cutting public television funding in favor of putting more money towards the Vietnam War. The only thing Rogers was guilty of killing people with is kindness. Mr. McFeeley, on the other hand, is a different story entirely. That guy was clearly a former mob hitman living under witness protection as a friendly delivery man.