He has a yellow star on his shirt.
Usually, all 5 pointed stars are a reference to tangible matter. Perception through senses, in simple words... it's a hint that the guy might be a robot, a clone or a homunculus, and hence, his nasty behavior. He cannot tell the difference between good and evil.
That's just his clothing. I think you're thinking a little too hard on that. Now i can understand your theory if it actually represents his personality. But we haven't seen enough of him to really identify it. His screen time was really short
it totally makes sense.
5 is the number of the Homunculi, if you know what a homunculi is, you'll understand. It's artificial life form, a "human" that was created inside a Lab. These guys ultimate ideology is survival and hence, their sympathy for money. As long as they earn money, number 5 cheats, robs, steals, involve others in crimes, etc, etc, etc.
It just happens you don't notice them because their identity is not revealed in a explicit and blunt way. (nor their appearance) but they are always there.
Interesting theories. Usually there's a stereotypical school bully in Yu-gi-oh anime series. In the first series, it was actually Tetsu Trudge who bullied and attacked Yugi, Tristan and Joey. He would later appear in 5ds as a member of sector security. In GX, it was Crowler who was bullying and trying to expel Jaden and get him in trouble for things he didn't do, but later he liked Jaden.
Depends on what was deleted. Several of my comments in the past got deleted that wasn't even bad. It was a debate about scud (forgot the topic) but i said something like, "you're the only person who likes scud and everyone else doesn't with good reason." And it got deleted