Need a bit of help

Hey there everyone.  I'm a bit stuck in Paper Mario Color Splash and would appreciate any help you can give me.  For the life of me I cant find the third purple rescue toad.  Seems like ive looked everywhere over and over and now I'm totally lost.  Could you also tell me what the red thing on the red road that the know it all tells me I need is.
Thanks for any help you can give me
Use our guides to help you. The red object you see in Ruddy Road is the Fire Extinguisher. You need all members of the Purple Toad Rescue Squad to get that object. You need that Thing for
Morton, the boss of the first chapter.