Edit
核熱造神ヒソウテンソク (Thermonuclear Deity Hisoutensoku)
A giant humanoid form that is seen by the main characters of Touhou 12.3: Touhou Hisoutensoku. Revealed to be an advertisement balloon made by the kappa as a publicity stunt.
Often drawn as an actual mecha, the design having a great deal of similarity to Mazinger Z or Great Mazinger, especially via the spikes on the sides of its head and the frequent inclusion of wings resembling the Jet Scrander.