Zearth Junior is the non-canon child of Ultraman Zearth that appeared in New Century 2003 Ultraman Legend: THE KING'S JUBILEE. He is a member of the dance group Ultra Funk Jam.
New Century 2003 Ultraman Legend: THE KING'S JUBILEE
Zearth Junior, along with Alien Benzene Jr were among the many performers at the King's Jubilee in 2003, along with their back up dancer, Miraclon. He appeared several times through out the special event.
- Ultraman Zearth is apparently very proud of his son, so much so that he had to be silenced by Ultraman Nice and several other audience members.
- Considering Zearth's father, this maybe the example of the first ever Ultra-grandchild.