Like his mate, Muhangus has brown fur, with a lighter face and underbelly. He has pale gray, bushy eyebrows, and dark blue eyes. One of his ears is slightly torn. The fur on his back is rather bristly, and he has several dark hairs on his lower jaw. His claws are gray, and his nose and tail are light brown.
Muhangus is shown to be fierce and territorial, with a short temper. However, despite his ferocity, he is quite scared of hyenas and will always call upon the Lion Guard when he believes they are near, even if he is mistaken.
On the day of Kupatana, Muhangus and his mate Muhanga return to their dens to discover that they had been invaded by jackal pups. Muhangus asks what's going on, and Beshte attempts to calm things down, assuring him that the situation can be taken care of. When Kion arrives, the parents of the jackal pups, Reirei and Goigoi, approach him. Muhangus spots Goigoi reaching into his den and taking a fruit, and angrily calls him out for it. Reirei intervenes, complimenting their den, and Goigoi swallows the fruit and tells Muhangus that the fruit is delicious. Muhangus points out that he never said Goigoi could eat it, and Muhanga accuses the jackals of thievery. Eventually, the Lion Guard convinces the jackals to leave, and Reirei explains to her pups that they'll find someplace else to go. An irritated Muhangus tells them to go do so.
Muhangus later appears during the song Jackal Style. One jackal pup makes a face at him, and Muhangus chases him away, allowing another jackal pup to lie down in front of his den. He surrounds the jackal family with the other Pride Landers at the end of the song.
Muhangus is seen settling down with several insects, ready to tuck in. However, a voice claiming to be Janja frightens him away. Along with a couple of other animals, he tracks down the Lion Guard, explaining what happened. Kion follows Muhangus back to where his food was, though not only is Janja nowhere to be found, Muhangus' insect pile has vanished. When everyone returns, they discover that similar happenings have occurred between the other animals. A voice sounding exactly like Janja startles them, and Muhangus stays behind to let the Lion Guard deal with the 'intruder'.
Believing hyenas to be in their den, Muhanga and Muhangus call the Lion Guard to drive them away. Muhangus does most of the talking, explaining the problem. He points out the "hyenas", and Kion forces them away.