Aleu was the wolf-dog hybrid daughter of Balto and Jenna and sister of Kodi and his siblings. Aleu appeared in Balto II: Wolf Quest as the secondary protagonist, and made a second appearance as a puppy during Balto's flashback in the song "You Don't Have To Be A Hero" during Balto III: Wings of Change.
She was voiced by Lacey Chabert, who also voiced Eliza Thornberry and Vitani.