Koo is a minor character from the 1985 animated series She-Ra: Princess of Power.
She-Ra: Princess of Power
Dee and Koo mistook Rebel leaders Adora and Bow for Hordesmen and took away their weapons while they were sleeping. The two little Bibbets ventured to the Horde building site brandishing the Rebel armory, but were easily defeated by Horde Troopers. Lucky for them, Adora and Bow were close behind, arriving in time to free them, get their weapons back and, with help from She-Ra, defeat the Hordesmen and make them leave Bibbet Land.