One of the bad guys from the game Super Mario Land. Yurarin Boo jumps up and down spitting out fireballs and can be found throughout the Muda Kingdom (World 2). He is immune to superballs so Mario has to jump on him to kill him, but he's not immune to torpedoes so Mario can really blast him in World 2-3.

Don't confuse Yurarin Boo with his little sibling Yurarin. They both look the same, but Yurarin doesn't shoot fireballs.

Yurarin Boo looks like this:
      #######
     ####O
    ##  ###
   #O## #OO
  ####  ####
###OOO##O# +#
 #  ## ##++ #
   #+++ #++ #
   #+++ #+++#
   #+++ ####
   #+++ ###
    #+++###
 #   ###OOO
 ##   #####
  ##OOOOOO
   ######
He's worth 400 points.