He's The Undefeated of the East! Master Asia Appears is the twelfth episode of Mobile Fighter G Gundam.
At the Neo Japan space colony, Karato is woken up by a phone call from Ulube and Dr. Mikamura. They tell him that the Shinjuku area of Tokyo is under attack, and it's probably the Devil Gundam that's attacking. Karato agrees to send Domon to investigate. Domon and Rain arrive in the ruins of Tokyo and see an airplane crash. The dying pilot gives Domon a disk and asks him to deliver it. Suddenly, several mobile suits surround Domon and Rain. Rain starts the Core Lander, and they escape. Domon is about to call for the Shining Gundam, but a masked man appears and single-handedly destroys the mobile suits by himself with Domon's headband. One remaining enemy is destroyed by two Nobusshi suits. From his moves, Domon recognizes the man as Toho Fuhai, aka Master Asia. Master Asia was the previous King of Hearts, and Domon's martial arts teacher. Domon breaks down in tears and tells Master Asia how much he's missed him. He tells Master Asia what happened with his family and Kyoji. Master Asia tells him how he became a Gundam Fighter for Neo Hong Kong in the tournament and was lured in for a fight with the Devil Gundam. However, during the fight it destroyed Tokyo with its Death Army mobile suits. Afterwards, the survivors joined together to form a defense group and use the one remaining building in Shinjuku as a base. Master Asia says that everyone lives their lives in fear now. A frightened pilot escapes in his Nobusshi and is shot down by the Death Army. Master Asia says the defense team is giving in to their fears, and he asks Domon to fight with him.
Rain walks around the single standing building where all the survivors are staying. Master Asia shows Domon the Kowloon Gundam that he used to win the 12th Gundam Fight. Domon says his Shining Gundam is powerful, and Master Asia jokes that he always likes to talk big. They laugh together, and Rain notices this is the first time she's seen Domon happy in a long time. A battle alert is sounded, and the radar shows hundreds of Death Army suits slowly approaching. Everyone panics, but Master Asia has a plan. He wants to lead a small force to distract the Death Army and drive them into the ocean. From the data Domon delivered, they have discovered that when attacked, the Death Army calls for help. Therefore, they must be careful in fighting. Master Asia and Domon launch with a squadron of Nobusshis and attack the Death Army. The fighting is taking too long, so Domon and Master Asia perform the Choukyuu Haou Den'eidan special move and destroy many suits. A lone suit approaches the building, and a Nobusshi pilot attacks it. It sends out a distress call, causing the others change direction. Domon flies back and uses the Shining Finger to destroy the suit. Master Asia returns after driving the Death Army into the ocean. The cockpit of the Death Army suit opens, and a corpse covered in DG cells emerges. Master Asia sets it on fire and burns it. Domon remembers that Dahal and Saette were just like that when they were infected with DG cells. He knows the Devil Gundam must be nearby and that he has finally caught up with it.
- TV Asahi: 1994-07-08
- Cartoon Network (Toonami): 2002-08-22
- GundamInfo: 2021-12-10 21:15 JST 
- Characters Introduced: Master Asia
- Mecha Introduced: Kowloon Gundam, Death Army, JMS71 Nobusshi, Death Beast
- Recurring Characters: Domon Kasshu, Rain Mikamura, Karato, Dr. Mikamura, Ulube Ishikawa, Dahal Muhammad (mentioned), Saette Gyuzelle (mentioned), Stalker
- Recurring Gundams: Shining Gundam, Devil Gundam (mentioned, briefly)
- Deceased: Neo Japanese Plane Pilot, Nobusshi Pilot, Death Army Pilot
- DG Cell Infected Fighters: Death Army Pilot
- Domon meets Master Asia in the ruins of Tokyo in Neo Japan.
Featured Gundam Fights
Master Asia vs. Death Beast x3
- Winner: Master Asia
Nobusshi x2 vs. Death Army
- Winner: Nobusshi x2
Shining Gundam, Kowloon Gundam, and several Nobusshis vs. Death Army and Death Beast
- Winners: Shining Gundam and Kowloon Gundam
Shining Gundam and Nobusshi vs. Death Army
- Winner: Shining Gundam