Smun is a Malayan porcupine. His fur is black, his belly is gray, he has quills and a black nose. His ears are dark brown and his eyes are dark brown. He has a bright brown stomach.
Smun is crafty, clever, and smart. He always tells all the animals of the forest not to mention tuliza or Mama Binturong will come for them.
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. He and the rest of his prickle were also shown to take malicious delight in terrorizing the animals of the Tree of Life, show casing her influence on them.
Smun is seen watching the Lion Guard. After hearing that they want something to do with tuliza he goes to warn Mama Binturong. Mama is hanging upside down eating tuliza. She tells her porcupines that they don't mess with Mama, and she and her porcupines go to meet with these strangers. They soon take Makini'sstaff. Bunga goes to stop them. He defeats them by farting and destroying her tuliza. Mama says that she wants revenge on Bunga. Smun says that the forest won't be the same without her.
Smun comes to the Tree of Life, having gathered Makucha's Leap and Ora's Bank. He helps Mama Binturong and Makucha's Army fight the Night Pride and the Lion Guard. Mama orders her porcupines to trap Ullu so she doesn't warn the Night Pride. Her head went all the way around and the porcupines got scared.
Later, Kion uses the Roar of the Elders and defeats all of the bad guys, and Smun's Prickle lands on the exhausted Fahari and Jiona. Kion uses the Roar to summon a tornado that takes all of the Army's forces away from the Tree of Life.
He was voiced by James Sie, the voice actor of Monkey from the Kung Fu Panda franchise, Emperor Quon in Sofia the First, Viper's Father and Kobe Cows 1 and 3 in Back at the Barnyard. He also voices Sãhasí.