Screwloose was an alien mosquito who allied with Wingnut. The two of them were denizens of the planet Huanu, which was destroyed by Krang. Wingnut and Screwloose were saved by a vortex and spat onto Earth, where, in a crazed fervor, they attacked anyone with any connection to Krang. After a short fight the TMNT subdued and tied up the duo, but quickly learned the only reason they attacked them was in belief that the Turtles were working for Krang who had committed genocide on their home world, leaving Wingnut and Screwloose the last of their species respectively, at this point they were abducted by Cudley the Cowlick who explained to the TMNT that he was going to take them to compete on Stump Asteroid.