- Not to be confused with the replacment Rockhopper, RockhopperBot.
Robo-Hopper is an evil robotic version of Rockhopper.
Robo-Hopper has a special built in laser that he uses to zap penguins and puffles with, causing them to disinegrate. He also has a teleporter, which lets him teleport to the Migrator and Club Penguin. At night time, he sometimes goes on the Migrator and haunts Rockhopper. Gary has created traps for Rockhopper to use on the Migrator to keep Robo-Hopper from going on, but Robo-Hopper is a highly advanced robot and is able to outsmart most of the traps. There is only one trap Robo-Hopper cannot outsmart; the Super Plunger 3000. This machine shoots plungers rapidly at it's target.
- It is rumored he is working for someone, but this has not been confirmed.
- Robo-Hopper's weak spot is his stomach, but nobody except him knows that.