|This article's title is conjectural and may be subject to change as new information becomes available.|
A pair of Mutant Bowling Balls are among the creatures that attack the 1987 version of April in Turtles Forever. Like the other mutants of this scene, their origin is not explained. The two balls are taken out when 1987 Leonardo cuts a street light and knocks them over with it.
As a possible reference to these mutants the 2018 series have the turtles fighting what look like mutated bowling pins.