The Grand Chariot is a large battleship/carrier, which is used as the flagship of OZ Prize and serves as its mobile base of operations for the "Stardust Knights" and other elite pilots who operate out of it during OZ Prize's siege of the MO-V base.
It is eventually destroyed after a vengeful Dr. Berg activates his failsafe program "Auto-Destruct Program Berg-01" with his dying breath, designed to crash the ship into the Earth after destroying everything in its path - including the colonies starting with MO-V. However Odin Bernett is able to use a modified version of his OZ-19MASX Gundam Griepe, combined together with various parts of the other two G-UNITs, which allows him to destroy the ship before it can achieve its intended goal.
- In the Tokyopop translation of New Mobile Report Gundam Wing Dual Story: G-Unit they use "Grand Shario" as the name for the ship.
- Another Grand Chariot is referenced in the New Mobile Report Gundam Wing: Frozen Teardrop Novel.