The Mummy Minosaur is a minor antagonist in Kishiryu Sentai Ryusoulger, appearing as the main antagonist of Episode 13. A mummy-themed Minosaur, it was created by the Druidon Tribe from the negative emotions of Mioko Karino, the Prime Minister of Japan, based on her desire to perish with her aging lover.
The Mummy Minosaur made its first appearance right where Kureon and Wizeru is about to transform part of the parking lot to be the Druidon's hideout. However, unknown to the two, the Mummy Minosaur used one of its abilities on Kureon, making her to tell the truth to Wizeru. Once they spot the intruder, the Mummy Minosaur dodge Wizeru's attacked and retreats to the outside.
A while later, the Mummy Minosaur used its ability on the couple, causing the two break up from each other. However, it was then spotted by Bamba and Towa, so it has no other choice but to battle them. During the fight, the Mummy Minosaur fired its beam on Towa and after that, he fired his bandages on them followed by a jolt attack to knock them out of their transformations. Being successful in this, the Mummy Minosaur teleported away.
The Mummy Minosaur appeared once again destroying a building, but it was stopped by the arrival of the rest of the Ryusoulgers, so it battled the team. During the fight, it fired its beam onto Asuna, causing her to tell the truth to Melt.
Thanks to Bamba for doubting her it caused her to produce more negative emotion for the Mummy Minosaur making it grow to a giant size. However, before Koh get the chance to bring out KishiRyuOh DimeVolcano, the Mummy Minosaur fired its beam on the two dinosaurs, causing them to tell the truth. However that didn't stop them, so without other options the Mummy Minosaur began fighting this robot while attempting to run away throughout. Stopping the monster with cans of gas setting the Mummy Minosaur's bandages on fire, the Mummy Minosaur was eventually defeated by the Volcano Slash technique.
- Due to an error on Episode 35, the image from TV Asahi website shows the Mummy Minosaur and Pan Minosaur fighting Bamba.