Walking shell
A walking shell is the most common variety of shell, and is found in various levels in Rayman 2: The Great Escape and the Game Boy Advance version of Rayman 3. They are small, yellow, explosive, rocket-like, two-legged robots used by the Robo-Pirate army to guard passages. They share some behavioural traits with both dogs and horses. They chase Rayman if he passes into their line of sight, but, unlike red walking shells, he can tame them by running from them until they grow tired. Rayman can jump onto the backs of tired walking shells and ride them to overcome otherwise impassable obstacles.
