Good Japanese Gang Names?

Question:

I'm writing a story and in it there is a Japanese gang, and the gang is a sort of 'Biker gang', but obviously Japanese..
I'm terrible with choosing/making up names, so what are some good ones?

I would like a name in Japanese - With the meaning/translation in English please
(PLEASE None that are existing gangs, just a made up one. Thanks)

Answer:

No one knows all biker gang names in Japan. So no matter who creates a name for, it's possible that it exists in Japan.

But anyway, what about 狂走団 kyosodan?

It means,

狂 crazy
走 running
団 gang