Makunga is in a constant struggle for power against Zuba for the alpha lion position. Although he does fight Zuba multiple times, the latter often defeats him.
At the start of the film, one of Makunga's attempts resulted in Alex being captured by poachers from Zuba.
Years later, after the return of Alex, Makunga manipulates him into fighting Teetsi, who effortlessly defeats Alex. Zuba is the subsequently removed from power, with him and his family banished from Makunga's territory. Makunga proves to be much worse than his predecessor, however. When the water dries out, Makunga advocates violence as a solution. His subjects disagreed with him. The issue is eventually resolved when Alex, his other allies and Zuba destroyed the dam forged by tourists.
With the water supply resolved, Zuba and Alex returns only to be confronted by Makunga, who reminds him that they are still banished. Alex tricks him into taking Nana's purse then releases the enraged old lady. Nana proceeds to severely assault Makunga before dragging him away, removing him from power once and for all. Zuba and Alex are both subsequently reinstated as alpha lions.
What happened to Makunga after the events of the film remain unknown, although the DVD commentary reveals that Nana brought him to New York in a kitty cage.----