Denemon Shinkai

Den'emon Shinkai (新海 電衛門) is Haru Shinkai's late paternal grandfather. He was a computer scientist and the creator of Minerva. His voice is recorded in the Appli Drive, and Appli Drive DUO.

Appearance
Den'emon is an old man with dark gray hair, and a broad, dark grey mustache. His eyes are an unknown color due to being covered by a pair of yellow glasses with purple lenses. He also wears a red, button-up collar shirt under a white lab coat, as well as khaki shorts with a black belt, and brown boots that are black at the bottom.

Etymologies
Name used in Digimon Universe: Appli Monsters.
 * Den'emon (新海 電衛門)
 * Ja: Shinkai (新海). Japanese surname that means "new ocean". Possibly a reference to the.
 * Ja: Den'emon (電衛門). A Japanese masculine name composed of the for "electricity" (電), "defense" (衛), and "gate" (門). The "-mon" suffix is possibly a reference to Appmon.

Anime
Den'emon Shinkai was at the in 1956, where he talked with Marvin Minsky and John McCarthy, who he called "Min-chan" and "Makkun" respectively. At some point he created Minerva. In 2006, he witnessed Leviathan's birth and attack on Minerva. He later left a message in a video tape to be watched by Applidrivers, saying they were the heroes meant to defeat Leviathan. He died when Haru was still young. Some years later, Haru,, Eri Karan, , Torajiro Asuka, and watch the message left by him, and  shows the them events of Minerva's creation, and Leviathan's attack on it.