Dogpound Rahzar is a Teenage Mutant Ninja Turtles minifigure released in 2013 . He is Chris Bradford ' s mutated form . He is the only mutant known to mutate twice . Description . Dogpound ' s torso - head combination piece is a new mould released exclusively for this figure . His facial area is white with red eyes , a black nose , and yellowed teeth . On top of his head , Dogpound has two ears and spikes running down his back . On the bottom , backside of the piece , there is a curly tail that attaches to his back . Dogpound has a white stomach with a white , sixpack of muscles . On each side of the piece are knobs sticking out that the arms attach to . His left arm is very large and spiky . It is mostly brown , but the top and bottom of the piece as well as his fingers are white . Dogpound ' s right arm has the same colour scheme as his left arm but is significantly smaller and without spikes . His hips are black and his legs are red with a chain mail loincloth and metallic kneepads . Background . Born in 1979 in New York City to a rich and wealthy family , Chris Bradford was trained as a prized member of the Foot Clan and the star pupil of Oroku Saki ( best known as " the Shredder " ) , owning a chain of dojos around the world where people could train in various martial arts classes , eventually getting recruited into the Foot if passing the ninjutsu classes . Bradford had much respect in his clan , but formed a rivalry with Shredder ' s street contact Xever Montes . In the episode " New Friend , Old Enemy " , when Shredder discovered his old enemy Splinter was in New York and had a clan , he traveled there and ordered Bradford to find Splinter and the turtles . Michelangelo attempted to make friends with him using social networking , but when Splinter recognized the kata Shredder taught Bradford , the plan to trick Michelangelo into showing Bradford the way to the lair was foiled . In the episode " The Gauntlet " , the Kraang try to set off a mutagen bomb in New York City , and the turtles stop them , but Bradford and Montes arrive to try and kill them . When they were cornered , Bradford , who knew he had no escape , stabbed the bomb in an attempt to take the turtles down with him . Instead , the stream of mutagen spurting from the bomb missed the turtles and hit Bradford and Montes , turning Bradford into a large mutant Akita - like creature with a spiked back , a large left arm , heightened senses and superhuman strength ( due to him previously getting bitten by Shredder ' s pet Akita , Hachiko ) . After the turtles saw Bradford ' s new form and battled him near Shredder ' s lair in the episode " Panic in the Sewers " , he was given the name " Dogpound " by Michelangelo . Under Shredder ' s orders , Dogpound was sent with the Purple Dragons to hijack a tanker truck and use the chemical inside to destroy the the Turtles lair , with Splinter inside , but was defeated when Michelangelo threw a water balloon at the spilling chemical , destroying it and sending Dogpound flying backwards . After several repeated failures while fighting alongside Fishface , Dogpound came to the conclusion that he ' ll never be strong and fast as he was as human . So in the episode " Mikey Gets Shellance " , Karai sent him to retrieve Baxter Stockman into having him retro - mutated . However , during is fight with Michelangelo , Dgpound fell into Stockman ' s mutagen supply and mutated a second time into a werewolf - like mutant with bones showing . Finally retaining his original strength and speed , he asked the turtles not to call him " dog " anymore , so he was given the name " Rahzar " by Michelangelo , who then tricked him into attacking the power generators , electrocuting himself , Fishface and Stockman in the process . In the episode " Wormquake " , Shredder returned to Japan and commented that Rahzar looks terrible , but still employed him in the Foot despite his condition .