Lian

Lian, also referred to as "The Maker," is the main antagonist in Avatar: The Last Airbender (video game). She is responsible for the machines that are wreaking havoc in the game. She believes that the only way to end the war is to build machines that can defeat the Fire Lord. Because the Fire Nation will soon win the war, and since she does not believe that Aang will master the elements in time, she built the machines. Her plan was to destroy all benders and replace them with her machines so there would never be any more wars. She does not appreciate the bending arts. She was later crushed by her greatest weapon, Ultimation, which was the final boss in the game.

History
She was captured by the Fire Nation to create machines for them. When Aang and Sokka found the Katara had gone missing, they went to the Fire Nation prison to find her. When they reached the final room of the prison, they also reached Lian's cell. The have to fight the jail guard to set her free. Lian notices that he is an Airbender. And is amazed by this. She had an idea. Once they had weakend the jail guard, they find that Lian had escaped, leaving a map to an old earthbender training camp.

Trivia

 * Lian's ultimate fate after Aang defeats the Ultimation differs in each version of the game. In the console version, it is implied that the Ultimation topples over, crushing Lian. In the PSP and DS version, Lian collapses in disbelief and Yuan says that he will make sure that he and Lian atone for their actions. The Game Boy Advance version gives no indication what happens to Lian.
 * She has what is called bender envy. She envies the capabilities of the benders, and thus makes machines since she believes that bending is nothing more than "magic".
 * This "bender envy" displayed by Lian is strangely reminiscent of the anti-bender revolt that is said to occur in Avatar: Legend of Korra.