The prolific voice actor was also known for roles in "Superman: The Animated Series," 1985’s "The Transformers," and "The Grim Adventures of Billy & Mandy." ...

The lore-changing death of Master Splinter shook the Teenage Mutant Ninja Turtles to their core ... Donatello is referring to a dead, decaying rat on his shoulder, and he's the only ninja turtle ...