Unico (voiced by Katsue Miwa in Japanese versions and Barbra Goodson in English dubs) is a baby unicorn with white fur, a pink mane and little cinnamon bun-shaped ears, who was born with the very special gift of making all living creatures lighthearted and happy.
- Unico will meet the Justice Guardians in Jeffrey, Jaden, Hiccup & Friends meet Unico.
- Unico will reunite with the Justice Guardians in Jeffrey, Jaden, Hiccup & Friends' Storm Adventures of Unico in the Island of Magic. At the end, the team convinces the gods to leave Unico alone. Unico will also be adopted by Shining Armor and Princess Cadence.