Lily

Lily is a young Tyrannosaurus who is good friends with Ook Shadowski, Gluk Jones, Gak Shadowski, and Lan Wong. Her mother is Mog-Mog.

Lily went to free Ook and Gluk from Goppernopper Enterprises and learned kung-fu from Master Wong for seven years, although she never got good at it, and whenever she spun around, she threw up.

​The Adventures of Ook and Gluk: Kung-Fu Cavemen From the Future
Lily is the deuteragonist of the story. She helps Ook and Gluk defeat the Goppernopper Enterprises.

Captain Underpants and the Revolting Revenge of the Radioactive Robo-Boxers
Lily appears as the main character in George and Harold's wordless comic book that they drew on the cave wall.

​The Adventures of Ook and Gluk Jr.: Kung-Fu Cavekids in Outer Space
She was slated to appear in the likely-cancelled sequel to the Ook and Gluk Saga.

Trivia

 * Lily looks just like her mother, albeit much younger and smaller in size.
 * Crackers could be George and Harold's inspiration for Lily.
 * They are both babies.
 * They are both reptiles.
 * They are both girls.
 * Lily never really grew in the seven years Ook and Gluk learned kung-fu. Instead, she learned to throw up her lunch at will.
 * The scene where Ook and Gluk warn her to not be a hero or a fool of her life is similar to when Billy's parents warned him to not be a hero or a fool of his life.