The Foot later formed an unlikely alliance with Splinter and the Turtles to deal with the threat of the Triceraton's Black Hole Generator, only for Shredder to violate the truce and murder Splinter before he could deactivate the device. As a result, the device went off, and all the Foot Clan members were drawn into the black hole along with the entirety of Earth's population-with the exception of April, Casey, and the Turtles-and the planet itself. Due to the Fugitoid using a device on his ship at the start of the fourth season, time was reset to six months before the Triceraton invasion so that the Turtles, April, and Casey could prevent the Triceratons from assembling the Black Hole Generator. The heroes later teamed with their past selves to save the Earth, during which they were able to alert Splinter to Shredder's murderous intent, leading to a duel between Splinter and Shredder. Splinter achieved victory, but Tiger Claw recovered his master and warned that the Foot Clan would return.