When testing of Dr. Will Rodman's new "ALZ-113" drug began at Gen-Sys Laboratories on an initial ten chimpanzee test subjects (which included Koba), further chimpanzees were acquired from the San Bruno Primate Shelter, including Lucky and - later still - Cornelia.
He was likely liberated when Caesar led the other apes in rebellion and freed the lab apes. His eventual fate is unknown, as it is unknown if he survived the Battle on the Golden Gate Bridge or if he reached freedom in the redwoods of Muir Woods Park.
- An earlier version of the script named Lucky among the first batch of apes at the Gen-Sys Laboratories with Bright Eyes, Caesar's mother. Felix, Bam Bam and Monty were other inmates, with Lucky the ape who goes on a rampage and is shot by a guard named Len (or "Guard #1"), rather than Bright Eyes (as in the movie).
- It is unclear if Lucky appeared in Dawn of the Planet of the Apes and War for the Planet of the Apes.