Crash Man is a boss from Mega Man 2. He is one of the first robot masters crafted by Dr. Wily though he's a bit forgettable.
His fight is a bit too easy. The only thing he's got the upper hand on is durability to the mega-buster.
After he's defeated, you get his power the crash bomber.
Which can shoot and make some walls explode. It's slow but can be powerful depending on the situation.