The Gopher

The Gopher was an Earth Rumble VI fighter who used an unusual style of earthbending, consisting of burrowing underground with tunneling tactics, and emerging only to attack. He wore a headband-like mask during his fights.

History
He was easily defeated in his match against The Boulder in the tournament, and later he helped Xin Fu kidnap Aang and Toph, holding them for ransom. When Toph was traded free for the money, she battled and defeated each of the Earth Rumble VI fighters, including The Gopher.

His ultimate fate after the end of the War is unknown as he didn't join The Boulder and The Big Bad Hippo to aid in the Invasion of the Fire Nation.

Trivia

 * The idea of The Gopher's tunneling attacks was also used by the character Hiroshi, in the comic "New Recruits".
 * Gopher refers to an unhybridized animal, something which is rare in the Avatar World. This perhaps implies that gopher in a creature's name denotes it as being able to burrow under the ground.