The Kikkoman animation is actually a joke animation designed by someone on the japanese equivalent of newgrounds. They must have thought, "there's superman, batman, what about KIKKOman?"
The word Kikkoman comes from the amazing Kikkoman Soy Sauce. A Kikkoman is someone whos got that sauce. They're also very sweet and super chill. Kikkomans often use the word "soy" to describe cool things.
Brahda1: Man I love that dude, he's so cool & chill.
Brahda2: Forreal dude, he's a real kikkoman.