Gabby the Monkey was endowed with speaking ability through operations by Alice O'Day, a scientist. She was developing research to give power of speech to animals, in order to help the government in espionage missions. O'Day was killed in a car accident when she was being kidnapped by bandits who wanted her formula, leaving Gabby as her only talking experiment, and Midnight adopted him as a partner in his crime-fighting career.
- Gabby can talk, which is impossible for others of his species.
- This version of Gabby the Monkey, including all history and corresponding appearances, was erased from existence following the collapse of the original Multiverse in the 1985–86 Crisis on Infinite Earths limited series. Even though versions of the character may have since appeared, this information does not apply to those versions.
- 33 Appearances of Gabby the Monkey (Quality Universe)
- 2 Images featuring Gabby the Monkey (Quality Universe)
- Quotations by or about Gabby the Monkey (Quality Universe)
- Character Gallery: Gabby the Monkey (Quality Universe)