In short, this is how to beat the cow in red underpants. First of all, none of your attacks work against this guy, SO DON'T TRY. Ok, to beat him, all u have to do is every time he does that charge move at u, dodge it like u normally would until he starts to wobble dangerously close to the edge. When he does this, do the ground pound in the middle spot which will send him into the lava, and of course hurting him. After each time u do it, he will either do a new move or charge at u more times before he starts to wobble at the edge. And after five times of sending him in into the lava, then that's the end of Red Brief J. If u want to learn how to dodge his moves read on.
The Mad Cow Charge (when he tries to plow into u)- Run around, jump, i dunno, just don't get hit.
Spinning Beef (When he spins around trying to kick u)- Run away, jump away, i don't care
The Cow That Jumped Over The-- ok that's just stupid. (When he jumps up and slams into the center, sending lava through the holes of the arena)- stay in the middle, just stay there until the move is over