Toy Line: Yie Ar Kung Fu
Sculpt Names: Buchu, Blues, Oolong, and Blues (again)
Collector's Note: Wrestling and (mixed) martial arts are popular in Japan and are thus expressed in the medium of keshi. Above are a few fun examples. I love the light blue color. It allows the sculpt's details to pop.
I'm not certain if these figures are all from the same line or not, nor their names. I will say though that the top fellow reminds me of the ever lovable Abdullah the Butcher.
Update: Special thanks to Bigazzhead for the id in the comments!