Well who doesn't know that sweet tiny dino called Yoshi? I own the (*cough*ROM+emu*cough*) SMW for GBA and I am puzzled big time. Where are the friggin red,blue and yellow Yoshis?? How to get them exactly? (BTW I've passed to the Forest of Illusions. No secret shortcuts, but I stomped 4 (of ?) switches, green, blue, yellow n' red.
If you ask, for what Koopas were made, it's not to defeat Mario, but to give Mario some fun. Other monsters are for this point too.