- This article's title is conjectural and may be subject to change as new information becomes available.
In the episode Mutagen Monster, when Shredder tries to hijack some train cars creating mutagen components, Bebop and Rocksteady throw the switch on the signal box during an argument and cause the cars to collide and derail. A duo of bulls drink from the resulting mixture, mutating and fusing into one giant bull with multiple spikes growing out of it.
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