Donny Rottweiler is an antagonist in The Replacements. He is a professional bully who is much taller than Todd, but still attends his school. He is Buzz's mentor and Todd's other nemesis, he is feared because of his giant size and makes his last appearance in "A Tale of Two Rileys".
- In the episode "Master Pho", it's revealed that Donny wears Unicorn boxer shorts.
- In the episode "Crushing Riley " it's revealed that Donnie has a tracking device on his leg and is unable to leave the county line.
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