Bupu is a stubborn sable antelope who does not like being told what to do. He can be persuaded to take orders, but does reluctantly. He is also known to give up easily and can be hard to work with. But later on, we learn that he likes politeness and will be kind to those who are well-mannered.
However, he can be rather judgemental to other species, notably the Crocodiles.
Bupu and his herd had to stand around in water after a rainstorm flooded their grazing grounds. The Lion Guard comes to warn about a second storm on the way and that they must follow them for their own safety. Bupu refuses saying that they don't take orders from them, but Kion says if they come, they'll lead them to food and won't have to stand around in water. Boboka convinces Bupu to reconsider for the young ones. He finally agrees, and the Guard leads them away across the a cliff slide.
The Lion Guard lead the herd around the side of a cliff, until a rockslide falls. Kion warns them to stay back which annoys Bupu after just being told to follow them. The rockslide blocks them off, however the Guard climb over it. Kion tells them to move back, but Bupu refuses, saying that they're tired and 'give up'.
Fuli faces off with Bupu
Bupu and his herd refuse to move in the face of a setback
The Lion Guard leads Bupu's herd to the edge of the Flood Plains
Fuli attempts to make Bupu stand
Bupu argues with Makuu, the crocodile leader
Bupu attempts to negotiate with Makuu, but is interrupted by Kion, whose bias causes Makuu to leave in a huff