Heath is the library's thesaurus who is literally a giant dinosaur (a sauropod dinosaur-a Brontosaurus) as a pun on the word "thesaurus" or "the saurus" He often shows up unexpectedly when a character asks about a homophonic word or when a situation is called for one. He was voiced by Tyler Bunch in Season 1 and Peter Linz from Season 2 onwards.


Heath teaches some monkeys "ten little words"


  • By Season 2, he begins wearing glasses on his nose, notably in Ten Little Words.
  • In Good Night Knights, Announcer Bunny said Heath the Thesaurus 3 times fast.
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