NERV-Produced Anti-G Special Decisive Weapon Shiryū Prototype Unit

Within the crossover's fiction, NERV's Anti-Godzilla Division commissions this prototype to confront a kaiju that has leveled Tokyo again and again, a recurring calamity the organization ranks alongside the Angels. Engineering data inherited from the Kiryū series of machines, which the Japan Self Defense Force developed in an earlier era, forms the technical backbone of the project. In the real world, the design comes from Yoji Shinkawa, the artist behind the Metal Gear franchise.

Shiryū operates in two configurations: E Mode, an upright humanoid stance, and G Mode, a crouched forward lean that boosts agility and turns the tail into its primary weapon. Rows of compact blades line the spine and tail, running on the same principle as the Progressive Knife; their high-vibration particles let them carve through targets at the molecular level. For close-in fighting, "Anti Kaiju Battle Blades" fixed to both arms give the machine formidable melee reach.

NERV's Anti-Godzilla Division operates the prototype, which was first announced under the placeholder title NERV-made Anti-G Weapon. The toymaker Sen-ti-nel realized it physically as a roughly 180mm RIOBOT figure, sculpted by T-REX under Shinkawa's supervision through Kojima Productions, and released it on 23 July 2017 at 20,000 yen before tax. A darker repaint finished in gunmetal, dubbed Shiryū Kai, followed. In September 2024 the machine was confirmed to appear in PACHINKO GODZILLA vs. EVANGELION: Second Impact G.