Niju (Voiced by Mark Hamill) is the main antagonist of Balto II: Wolf Quest. Niju plans to take over the wolf pack with the aid of his followers, Nuk, Yak, and Sumac. Eventually the wolf pack started to turn towards Niju and started to follow him, but when the ice bridge that led to the caribou formed, the entire pack including Nuk, Yak, and Sumac turned back to Nava, Balto, Aleu. Niju also attempts to kill the pack leader Nava as well as Aleu, but his plans were foiled by Balto. He was defeated when the ice cracks beneath him and swims back to shore. He also has a fear of change.