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.
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'sBakora Staff. 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.