The Robot Demolisher is an invention made by Roméo Mécano for the purpose of destroying Tarabiscoville's School. It shows up in "L'école des Pyjamasques" and is the primary invention in "Les Pyjamasques et l'opération zéro". It has the ability to launch its fists and lethal missiles.
Les Pyjamasques et l'opération zéro
Roméo Mécano used the Robot Demolisher in an attempt to destroy School. However, Les Pyjamasques managed to win against Roméo Mécano by throwing insults at him in order to use his growing anger to have him destroy his own machine entirely.
L'école des Pyjamasques
The Robot Demolisher was then repaired and rebuilt by Roméo Mécano in another attempt to sabotage school. This time, the machine was built as a new model to have a glass dome at its head and to have its characteristics copied from Robot. He also planned to rebuild the school as his new laboratory. However, the machine was once again stopped by Les Pyjamasques with the help from Lilifée, Tatouro, Energuman and Les Mascrapules.
The Robot Demolisher also cameoed during the TV adaptation's theme song with the EOne counterpart of Roméo Mécano riding it.