When The Shredder found out that the substance that mutated the Turtles had been created by TGRI (Techno-Global Research Industries), he sent his Foot Soldiers to steal the ooze and kidnap head TGRI scientist, Professor Jordan Perry. Shredder instructs Perry to use the ooze to mutate an Alligator Snapping Turtle and a wolf (kidnapped from the Bronx Zoo) which resulted in the creation of Tokka and Rahzar. However, Jordan had secretly altered the mutagen, and as a result, the two mutants had the intelligence of human infants. Shredder ordered the monsters to face him in battle, to teach them who their master was, except the infantile mutants misinterpreted the word "master", thinking it meant "mamma", and hugged him instead. Angered, Shredder ordered them to be destroyed, but Perry had sympathy for them and showed Saki their total obedience to him and that, as they were "playing" in the junkyard, partially lifting a skid steer, they had great strength. This prompted Shredder to keep them alive.