Walking shell
The Walking Shells are some missiles found in The Menhir Hills from Rayman 2: The Great Escape. Designed by the Robo-Pirates, these shells are real head of mules that Rayman was able to tame by tiring them. Most of the Walking Shells can only run, but some can even fly. A Walking Shell also helped Rayman to defeat Razorbeard in the Grolgoth.