Emperor Unagami is a villain that will appear in Season 12. He is the final boss of Prime Empire. He is the leader of his army. The Key-Tanas are the keys to his throne room that the Ninja need to defeat him and get back into the real world.
- He uses a recolored shoulder pad of Mr. E's.
- He is the fourth Emperor character to appear in the series, having been proceeded by:
- The Emperor of Ninjago who, along with the rest of the Royal Family debuted in Season 8 and perished in "The Jade Princess."
- Garmadon took up the title of "Emperor Garmadon" in "True Potential" after being revived by the Oni Masks, reigning over Ninjago City until losing his powers in "Green Destiny."
- An amnesiac Zane, corrupted by the Scroll of Forbidden Spinjitzu and misled by Vex usurped King Grimfax, ruling over the Never-Realm as the "Ice Emperor" after being banished by Aspheera. Though he gives up this role after regaining his memories and destroying his scepter during the events of "Awakenings."
- The printing on his headpiece is similar to Zane, P.I.X.A.L., and Jay's pre-season 8. With him having a two-sided face with one side being normal and the other side having red on it like P.I.X.A.L.
- While he has the lining through his jawline and cheeks like Zane's and a notch on his left eyebrow like Jay's before Season 8 on the normal side, he has Zane's mouth on his angered expression.
- His name means "sea, ocean."
- He has an Empire Dragon. This makes him the 2nd emperor with a dragon, the first is Zane, who has Boreal.
- He uses the same hairpiece as Okino.
- His minifigure does not have legs and has a slope piece being used as a dress instead.
- This makes him the first Ninjago character to have the 2018 slope piece.
Community content is available under CC-BY-SA unless otherwise noted.