Mechakoopa

Mechakoopas are another one of Bowser's minions. They are very similar to Koopa Troopers, but they don't have shells on their backs. They get paralyzed for a short time when stepped on, so Mario can kick them around and pick them up and throw them. When they get thrown however, they don't get very far like regular Koopa shells do. Also, they are technically invincible unless you kick or throw their paralyzed form at an enemy because they always get unparalyzed after a few short moments. They only make a short appearance in Super Mario World for they only appear in the last World. Also, the final boss of the game, Bowser, throws them off of his hovering/clown machine. You must throw them up so they hit Bowser's head. They are like a cross between a Koopa and a wind-up toy. They have a wind on their back and their appearances are quite comical. They walk in a rhythmical way and they must wind themselves up again from time to time. They only appear in Super Mario World.