Makuu is a crocodile and the current leader of a float of crocodiles. He lives in the Pride Lands.
Makuu is a large crocodile with bright green scales and a light green underbelly. He has several dark green scales running along his back and on his tail. He has some light green spots running along his back, and small black claws. Makuu has a long snout, and his iris are black surrounded by yellow. Physically, he is very strong.
Makuu is young and courageous, but is very prideful. He is very boastful about his successes. Makuu is tough and strong but is somewhat disrespectful towards others and always eager to pick a fight, believing that physical strength is the most important part of being a leader. He has been described as a show-off. Though physically strong, Basi notes that his fighting technique is inferior to that of Pua's. He believes that only weak and cowardly leaders are afraid to fight.
Makuu does, however, know when he cannot win a fight, and will back down if so. However, he is a bit of a coward using Nala as shield to protect himself from Kion's roar.
Pua approaches Basi and asks if the fish in Big Springs are ready, but he asks him to swing by next week since there aren't enough for the whole float. Makuu disagrees with Pua for agreeing with Basi to return later when they were promised fish at Big Springs that day. He believes that Pua is weak, and challenges him to a Mashindano, which Pua accepts. At sunset, the two go into battle. Even though Makuu's techniques are poor, his strength and youth secure him his victory. Makuu becomes the new leader, and watches with great delight as Pua is banished from the Crocodile Float, taunting him as he leaves.
After becoming leader, Makuu takes over Big Springs, which causes the rest of the animals to scatter throughout the Pride Lands. Kion and the Guard try to reason with Makuu but he refuses to listen and demands a fight. When Kion refuses to fight, Makuu assumes that Kion is afraid, which Kion denies.
But with Mufasa's words of wisdom, the Lion Guard return to the crocodile leader telling him that if he wants a fight, then the Lion Guard will bring it. After Makuu sees Kion demonstrating the Roar of the Elders in the Grove of Trees, he and the rest of the crocodiles leave Big Springs. Before they clear out, Basi tells Makuu that he is welcome back once the fish have repopulated.