Demushu

Deemushu (デェムシュ) is a Overlord Inves and is responsible for countless murders of the old civilization trapped in the Helheim Forest, and has targeted Japan next.

History
When Kaito was searching for Deemushu, the Overlord Inves summons several Elementary Inves to attack Baron so he can escape.

It later picks up a pioneer plaque and a Japanese Dictionary that Kaito left to lure it out. Deemushu soon meets Kaito in the ruin and talks in a strange language. He also only responds by tossing the plaque and ripping the dictionary, leaving Kaito no choice but to fight. However, Deemushu proves to be very strong, even controlling the Helheim's plants easily and pinning Baron to the ground.

Before the Overlord could finish off Baron, Marika appears to distract Deemushu as they retreat. Later, Sagara, as a hologram approach to the Overlords as he somehow knew what are they saying. As Gaim searches for the Overlords in the ruins, Deemushu fought him without mercy while Redyue still reading the dictionary. Before Deemushu could finish off Kota, Redyue stops him and bind Kota with the Helheim plants as they leave, dropping the Rider as a result of their absence.

Appearance

 * Kamen Rider Gaim
 * Episode 21: Yggdrasill's Secret
 * Episode 23: Now Depart for the Front Line! Kachidoki Arms!
 * Episode 24: The New Formidable Enemy: Overlord

Portrayal
Deemushu is voiced by Tomokazu Sugita (杉田 智和), who previously voiced the male members of the Kivat-Bat family in Kamen Rider Kiva.

Name
The origin of his name might be coming from "de monsieur", which means "Excellency" in French.

Language
Deemushu seemingly has its own language. This is similar to the Gurongi Language from Kamen Rider Kuuga in which an enemy faction has its own language that the Japanese do not understand, the Undead from Blade and Fangire from Kiva also had their own languages. As with the Gurongi, Japanese subtitles aren't provided for Deemushu's speech, it is unknown if they will be provided in a later release such as a TV rerun or DVD release.