In the alternate ending, Damian Drake is devoled by his son to escape the clutches of Mr. Chairman who wants to throw him into the lava. Damian is devolved into a monkey and runs terrified into the jungle. It is unclear what Monkey Damian does in the jungle.
Monkey Damian reappears briefly when Mr. Chairman pulls out of a Taz cylinder. the verses of the latter and the prehistoric screams of Cave Kate make him escape into the jungle again.
After Cave Kate is evolved into Kate Houghton, Monkey Damian reappears on the Blue Monkey temple. D.J. puts the statue in Kate’s hands and asks her to bring it back to her father.