Tophzula

Tophzula is the femslash ship between Azula and Toph in the Avatar: The Last Airbender fandom.

Canon
Toph and Azula were always enemies. Toph was a member of Team Avatar who was trying to help Aang bring an end to the war while Azula wanted to capture or even kill Aang. The two faced off at multiple points in time. Toph and Azula first met during a confrontation in the abandoned town of Tu Zin. Toph had actually been avoiding Azula's pursuit of Team Avatar throughout the night before until she briefly ran away. She rejoined Team Avatar just in time to face Azula. The princess was outnumbered and shot a bolt of lightning at Uncle Iroh before escaping.

Toph and Azula first really talked during the invasion of the Fire Nation. They were looking for Fire Lord Ozai and found Azula instead. Azula teased Toph for her blindness by announcing that she was rolling her eyes and Toph responded that she would roll Azula's entire head. Toph demanded information and revealed her lie detecting abilities only for Azula to reveal that she was a good enough liar to avoid lie detection. She proceeded to tell Toph that she was a 400-foot tall purple platypus-bear with pink horns and silver wings, causing Toph to concede that Azula was indeed a good liar. Azula then used a group of Dai Li soldiers to stall for time until her firebending began to work again, prompting Toph and the others to escape.

Azula would later find the group again and attack them at the Western Air Temple, forcing Toph and the others to flee yet again. The two did not meet again. Azula was imprisoned in an asylum after being defeated by Katara during the passing of Sozin's Comet, which Toph was elsewhere at this time. Zuko later had Azula released in order to join him in his search for their mother but Toph was too busy with teaching her metalbending students to join them.

Fanon
Tophzula has a decent amount of popularity within the Avatar fandom. It was mostly regarded as a "crack ship" for a while due to the fact that they were enemies, age difference between these two and rarely interacted. A lot of fans tried to joke that Azula was the father of Lin when the Legend of Korra was announced. One of the creators, Bryan Konietzko, later got in on this joke and said that Azula was Lin's father on his Tumblr. This started a huge meme and a lot of jokes in the fanbase. While Lin's father was eventually revealed late in the Legend of Korra, fans still enjoy pairing Toph with Azula to this day.

Fandom
FAN FICTION
 * Azula/Toph tag on FanFiction.net
 * Azula/Toph tag on FanFiction.net

TUMBLR

Trivia

 * Colin Heck, a storyboard artist and director for TLOK, once joked on his Tumblr that Azula was the father of Toph's daughter, Lin. Bryan Konietzko seconded his answer.