I took some more screenshots of the last stage, Stage 5. A lot of people were reporting having trouble with this one because all the meepit does is block you.

And since the stages are timed, this causes a problem. Luckily, I beat him after awhile by backing off so he wouldn't block and using special attacks to finish him.
Besides that spinning one in the third frame, the fire meepit has this really cool special attack where he turns into like, this projectile meepit-o-flame. lol He looks really neat.