As they did, they kept being chased around by a Gorilla and out of fear he would eat them, they fled the scene until finding out he wouldn't eat them, courtesy of Nonny.
It's unknown who voices Sad Gorilla.
As his name implies, Sad Gorilla was... well, a Sad Gorilla! Due to his threatening appearance, he was very lonely and even felt worse each and every time Deema and Gil would flee from him. Eventually they learned that he just wanted a friend and they agree to become his friend and they gave him a hug, which cheered him up right away and make him not as sad anymore.
The Sad Gorilla is a very big, muscled Gorilla who appears to be a blue-gray color. His face, hands, feet, and chest/stomach being a lighter color. His eyelids are the darker color. His eye color is most-likely black.
Until he became happy, he was seen with a saddened expression.
"I'm a little bit sad.'
"'Cause I wanted to play with you, but you kept running away."
"Gorillas don't eat people."
- He's the first character ever to appear in a story.