|Season(s):||Beetleborgs Metellix 2|
|First Appearance:||Mega Borg Power|
|Last Appearance:||Mega Borg Power|
|Number of Episode|
|Actor:||Anne Britt Makebakken|
Repgillian was the final monster the Beetleborgs faced. Repgillian was created from mixing toxic chemicals, Les' old drawings (consisting of Changeling, Fernzilla, Torch Mouth, Ultra Vulture and Triplesaurus Rex), and Nukus' powers, and when sent to Charterville, attacked the city as a giant. This creature was more powerful than anything the Beetleborgs had ever faced, and even Roboborg had trouble when he fought her. In a last-ditch effort, Roland stole the Astral Ax from the Crustaceans and called on Boron, which subsequently caused Boron to switch sides and join the Beetleborgs' side. It took the combination of the Mega Spectra Beetleborgs, Roboborg and Boron to finally destroy Repgillian. After Repgillian's destruction, Les and Nukus decided to finally part ways after Les decided to go back to jail for some peace and quiet. He remarked that the Crustaceans were going to miss him and that he created them and he can erase them. As he left, Horribelle remarked she never really did like him.