The R-1/A Flying Dog is a machine used by G.U.N. that appeared in the level Security Hall from Sonic Adventure 2.


R-1/A Flying Dog is a VTOL multipurpose fighter armed with a 22 mm Gatling gun, 2 medium range advanced warhead launchers and a 200 mm beam cannon, protected with depleted uranium armor and powered by 7 GUN turbofan engines (11,000 lbs of thrust per engine). This boss is fought after playing Security Hall.

It appears in Sonic Adventure 2 and Sonic X, where it traps Rouge the Bat on Prison Island, but is defeated. Why it attacked Rouge despite being a GUN agent herself is not explained.

According to Sonic X, it is 3.6 meters in both height and width, and weighs 5.4 tons. There is also an unseen two seater version that presumably looks much like the standard version but the technical data is the same.To defeat him, Rouge must use the cages around her to fly into him and hit him in the cockpit. After doing this multiple times he will be defeated. He has many moves similar to F-6t Bigfoot and B-3x hot shot, with weapons such as the target missiles and lasers. He also shoots bullets at Rouge and bombs.


These specifications appear in-game as scrolling text at the very start of the boss fight:

General Characteristics Combat weight: 89.800 lbs. Dimensions Full length: 11.9 ft. Width: 15.8 ft. Height: 11.4 ft. Wingspan: 38 ft.

Power Plan1: Seven GUN F-series turbofan engines / Two GUN RX-01 turbofan engines with afterburners Speed: 160 mph Thrust: R1-B/C. 10.000 pounds each engine. Cooling (?): 32.000 H(?) Range: 2.400 miles.

Armament One 200mmm Long-Range Beam Cannon One M-32A1 22mm Gatling gun Two four AIM-120C Advanced Medium-Range air-to-surface Missiles External stations can carry up 10 conventional airt-to-air and air-to-surface munitions and electronic contermeasure pods.

Crew: R1-A: One. R1-B/C: Two.


  • Based on the text pre-battle, the R-1/A Flying Dog had at least two variants, both of which accommodated two pilots instead of one.
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