Green Shell - Super Mario Wiki, the Mario encyclopedia

Green Shells, also formatted as green shells, are green Koopa Troopa shells that have appeared in many games in the Super Mario franchise. Though their appearance remains largely the same, their functions differ throughout the different games.

Koopa Troopa - New Super Mario U Guide - IGN

Super Mario Bros. - Wikipedia

Green Shell, Mario Kart Racing Wiki

Triple Green Shells - Super Mario Wiki, the Mario encyclopedia

Green Shell, MarioWiki

Roy Koopa - Super Mario Wiki, the Mario encyclopedia

Piranha Plant, MarioWiki

Yoshi (species) - Super Mario Wiki, the Mario encyclopedia

Wiggler - Super Mario Wiki, the Mario encyclopedia

Ice Mario, MarioWiki

Green Koopa Troopa - Mario Wiki - Neoseeker

King K. Rool - Super Mario Wiki, the Mario encyclopedia

1-Up Mushroom - Super Mario Wiki, the Mario encyclopedia