Dr. Thaddeus Blakk is the evil owner of Blakk Industries and the master of his evil army. He is the main antagonist of Slugterra. He wants to rule the world with an Iron fist.
Dr. Blakk was a rival of Will Shane on earth and wanted to be the supreme one of all humankind thinking he can make a diffrence. He discovered Will Shane's secret world of Slugterra and wanted the world for himself with corruption.
He caused the Slug Wars as his coup'o'det attempt to rule Slugterra and try to rule Slugterra and made some of the Slugterran Peacekeepers his army.