Spiky John

From the Super Mario Wiki

Spiky John was one of Bowser's Koopatrols guarding Peach's Castle during the events of Paper Mario. Spiky John and his two friends (Mr. Hammer and a Koopatrol called Spiky Tom) were going to have a quiz show; however they needed one more person. Princess Peach showed up and they all decided to let her play. Immediately after the quiz ends, Spiky John leaves the room and is never heard from again.

Koopa Troopa Characters
Chef Torte | Chef Torte's Apprentice | Grunt | Holly Koopa | Hookbill the Koopa | Jagger | Johnson | Jr. Troopa | KP Koopas | KP Pete | Kent C. Koopa | King Tut | Kolorado | Kolorado's Father | Kolorado's Wife | Koopa Bros. | Koopa Koot | Koopa Krag | Koopa Master | Koopa the Quick | Kooper | Koopie Koo | The Koopinator | Koopley | Koopook | Koops | Koover | Kroop | Kung Fu Koopa | Kuzzle | Kylie Koopa | Mega Koopa | Private Koopa | Robot Monster Troopa | Shellshockers | Spiked Koopa Troopa | Spiky John | Spiky Tom
Koopa Troopa Species
Ankoopa | Beach Koopa | Dark Koopa | Dark Koopatrol | Elite Troopea | Gargantua Koopa Troopa | Glad Red Koopa | KP Koopa | Koopa Troopa | Koopa Paratroopa | Koopatrol | Mask Koopa | Nokobon | Robo Troopa | Shady Koopa | Space Troopa | State Troopa | Stormtroopa | Super Koopa | Super Troopa | Terra Cotta | Terrapin | Troopea | Wereturtle