He is American ingenuity.

Hopefully this is the end of this guy.

https://www.youtube.com/watch?v=lzPVqT5vW4M

Just so everyone is aware, one guy owns the costumes and he rents the costumes to others to make money. He does it as well, but I think there are 3 of them. Don't want to give one Billy The cub a bad name for the actions of another Billy The Cub

fuck yeah, Cubs fans are the best, they provide much free entertainment.

Going for mascot's junk--pure wrigleyville.

I don't think that's the original Billy the Cub, probably one of his seconds. And what's with the igloo cooler.

Glad to know you aren't stereotyping mascots.

In fairness to Billy, who here might not crack a guy who snatched his cap off your head?

Just so everyone is aware, one guy owns the costumes and he rents the costumes to others to make money. He does it as well, but I think there are 3 of them. Don't want to give one Billy The cub a bad name for the actions of another Billy The Cub

It turns out that old adage about not poking a bear rings true for cuddly mascot bears, too.

A YouTube video posted Saturday shows a man dressed as “Billy Cub,” an unofficial mascot of the Chicago Cubs, punching a patron in a bar after he removes the head of the costume.

John Paul Weier, the man who has been playing the role of “Billy Cub” for the last six years, says the costumed man seen in the video is his brother, Patrick Weier who frequently fills the role.

WATCH: Man Behind "Billy Cub" Mask Speak Out After Fight

Weier says his brother was being harassed by the patron long before the video footage began. He said the man was punching his brother in the back, shoving him into the bar and continued to poke and hit him until his brother confronted the man.

He said the man left, but came back shortly after and removed the costume’s head.

“It’s obviously not good publicity. You never want anything like this to happen, but from what I’ve read online it seems like people understand that the guy was antagonizing [my brother],” Weier said. “It wasn’t something he was looking to do.”

Renae Kondrat, who filmed the video, said two intoxicated men were antagonizing the mascot at Wrigleyville bar John Barleycorn.

Kondrat and her friends were taking pictures with "Billy Cub" when the incident started.

She said one man was taken out of the bar when he became too rowdy, but that a second man continued to tease the mascot before taking off his head.

"A drunk guy threw himself into [Billy Cub] and I happened to have my camera so I started recording and it all happened real fast," she said. "I wasn't surprised. You're not supposed to take off the mascot's head, everybody knows that."

This isn’t the first time a “Billy Cub” character has had issues with fans.

Cubs spokesman Julian Green said the team has received complaints from fans before.

“We have received complaints from fans, mistakenly believing ‘Billy Cub’ to be associated with the Cubs,” Green said in a statement.

Green cited complaints that two years ago, a Billy Cub character swore at a patron and used an ethnic slur, because of an inadequate tip. On another occasion, a Cubs employee claimed to have witnessed a “prolonged verbal altercation” between Billy and another fan, again over the size of a tip.

“This behavior is wholly inconsistent with the enjoyable fan experience we try to create at Wrigley Field,” Green said.

Weier said the complaints mentioned by the team didn’t involve him, however, and noted that he has severed relations with the employee who was wearing the costume on those days.

The Cubs and “Billy Cub” have battled over the mascot title for some time, until the Cubs unveiled an official mascot dubbed “Clark the Cub.”

Citing allegations of trademark infringement, the League sent Weier a 100-plus page letter, ordering him to stop wearing the Billy Cub costume, and engaging in “unabated Mascot Activities.”

"They can threaten legal action, it’s once they finally take legal action that’s kind of a different story," Weier said. "I’m willing and prepared to go to court and try to defend myself over what I’ve built over the last seven years."

Weier says he has no intention of stopping his role as "Billy Cub."

"We'll have a little mascot competition now," he said. "There hasn't been an official mascot yet, and now we've got an official mascot and an unofficial mascot. So, a little competition in Wrigleyville."

“unabated Mascot Activities.”

Weier says his brother was being harassed by the patron long before the video footage began. He said the man was punching his brother in the back, shoving him into the bar and continued to poke and hit him until his brother confronted the man.

How does "Billy the Cub" make money? People really do tip this thing?

It's one thing to entertain kids on the streets. These 3 "Billy The Cubs" actually walk into the Wrigley bars to entertain adult drunks? If I were the bar owners, I wouldn't allow him in. Why should he be allowed access to your customers to get tips?

Guessing anyone with a kid 9 and under who clocks Billy the Cub wandering around is probably handing over a five to get their kids pic with Billy the Cub

I take the side of Billy Cub because I support absurdity wherever it may lie. The mere concept of a guerrilla mascot (not a gorilla mascot) roving the neighborhood and shaking people down for tips is just totally batshit. Makes me laugh. What have the Cubs done since the Ricketts family came here? They've provided me no joy. Game, set, match, Billy Cub.

Yet another example of the message board greatness of Curious Hair. When I grow up, I hope to write a post that is as good as this one. Bravo, dude.

I am OK with the guy doing whatever he wants, everyone else does on gameday, but if you want to walk into a bar, gonna need to see your ID! Take off the head.

I still think it's funny seeing a guy in a bear costume punch someone.

However, I can easily see the cubs point in this case, once again, not sure why the holdup on the lawsuit. Crane Kenny must have the key to the mens room!

yes, lots of people tip him to take pics with him.

i encountered that silver "tron guy" on the platform. he was some goofy black dude who spraypainted everything he wore, including a giant funnel on his head, silver, along with painting himself silver.