Yellow Shell
Yellow Shells are yellow Koopa Troopa shells found originally in Super Mario World. When Yoshi hits the ground after a jump with a Yellow Shell in his mouth, a shockwave will surround him. This will cause the enemies to flip over and it will defeat all nearby grounded enemies. Yoshis can also spit it back out, in which case it will behave like a Green Shell, flying out at high speed and knocking over all enemies in its way.
Like other Koopa Troopa shells, the Yellow Shell will be launched when the Koopa Troopa wearing it is jumped on. It can also be held and thrown. If the player attempts to launch the shell back at a blue Beach Koopa, then it will grab and throw it back at the player.
In Chapter 3 of Paper Mario: The Thousand Year Door, the second oppontent Mario must face are the KP Koopas. They have the same stats as a regular Koopa Troopa but the are yellow instead of red.
