Plesiomon is a Dragon Digimon whose name and design are derived from the Plesiosaurus and the Loch Ness Monster. It is a previously imaginary Digimon discovered within the computer of a British cryptozoology research institute. It was a Digimon that had already been rumored among researchers. Although it rarely makes an appearance, it seems to show up when visibility is reduced due to being shrouded in fog. It is a mysterious being whose appearance gives the impression of being polished to shine white.