Smun has black fur, a gray belly, quills (just like what all porcupines have), and a large black nose. His ears are dark brown and his eyes are dark purple.
Smun is crafty, clever, and smart. He always tell all the animals of the forest to not say a word of Tuliza to make Mama Binturong frighten everyone away (a running gag in the episode Mama Binturong).
He is loyal to Mama Binturong for her acting as a maternal figure to him and his Prickle, though his loyalty blinds him to Mama Binturong's truly uncaring nature.
Role in the series
Smun first appears when he overheard the Lion Guard saying "Tuliza". He then explains to Mama Binturong that all the Tuliza belongs to her as she reveals her true nature throughout the episode. He and the other porcupines are present during the song Mama Binturong sings to the porcupines.
Smun is later present during Mama Binturong's confrontation against Bunga where Smun and the other porcupines start attacking him to which Bunga was able to outsmart them and get Makini's missing staff. With Mama Binturong foiled, Smun explains that his prickle will get more Tuliza for her to which she decides to take revenge against Bunga instead to which the porcupine talking to her tells her that the Stone Forest will never be the same without Mama Binturong as Bunga retrieves the missing staff and brings it back to Makini.
Smun and his prickle join Makucha's Army to add reinforcements to help Makucha, Chuluun, Ora, and Mama Binturong. He and the other members end up attacking the animals of the Tree of Life to which Kion was able to use the Power of the Roar to defeat them by creating a tornado and send them far away from the Tree of Life to never be seen again.
Smun and Mama Binturong are good friends. He serves as one of his master's spies and notifies her whenever the Lion Guard arrives.
In "Triumph of the Roar", Smun is in good terms with other members of Makucha's army in a plan to take out the Lion Guard and the Night Pride.
Smun is fearful of the Lion Guard after overhearing the Lion Guard saying "Tuliza“ as the Tuliza could be linked to Mama Binturong.
Smun is not only fearful of the Lion Guard, but is also fearful of Makini. He takes her bakora staff and gives it to his master while Makini does not notice it.
Along with the rest of Makucha's army, Smun and his prickle are enemies with the Night Pride, especially Rani.