Underground Fighters

The Underground Fighters is a group in the Sonic the Hedgehog series. It was founded by Longclaw the Owl and eventually included Katie the Hedgehog, Ariel the Fox, and Owen the Porcupine, across much time, starting just after Katie was born and Longclaw adopted her. They were eventually absorbed into the Freedom Fighters.
== Members ==
=== Longclaw the Owl ===
Longclaw the Owl was the team's founder and leader. The last of the ancient owl tribe, Longclaw was skilled in many skills that she taught the other members of the team. She was eventually killed by the Eggman Empire.
=== Katie the Hedgehog ===
Katie the Hedgehog is the first member that joined the Underground Fighters. Much like her brother, Sonic, Katie is fast, but uses roller skates for her speed. She is also trained in advanced combat. When they reunited, Katie immediately became close with her long-lost brother, Sonic.
=== Ariel the Fox ===
Ariel the Fox is the youngest of the Underground Fighters who joined just after her parents were killed by Chaos 7. She is a young fox who is skilled with technology, mostly hacking and coding. One of two foxes with two tails, Ariel was inspired by her hero and crush, Tails, Ariel uses her her two tails to propel herself in the air. Soon after she met him, Ariel started dating Tails.
=== Owen the Porcupine ===
Owen the Porcupine is a weapons specialist who was abandoned by his parents. He is Katie's boyfriend, who is devoted to helping out his girlfriend and his team above anything else, though he is cocky at a few times. Owen has a gun that he made himself out of scraps of metal, as well as a knife that used to belong to his father.
== History ==
When she was born, Katie the Hedgehog's parents were abducted by an alien spaceship and she was separated from her brother, Sonic, who was adopted by his Uncle Chuck. Katie was eventually adopted by Longclaw the Owl, who raised Katie like a daughter. 
At the age of 13, Katie started undergoing some training from Longclaw, who trained her gymnastics and ballet skills for combat purposes. Around that time, Longclaw enlisted a second member, a 14-year-old porcupine named Owen, who was being trained in advanced weaponry. Romantic feelings started growing between Katie and Owen, even though Owen's past was kept a secret to both Katie and Longclaw.
A few years later, Katie's training had progressed, and she and Owen had started dating. Meanwhile, Longclaw enlisted the team's final member, a young fox named Ariel, who was trained in technology. Katie was quite fond of Ariel and saw her as a younger sister. As time went on, all 3 members of the underground fighters became more and more skilled, until they were fully ready for battle.
During the events of the War to Take Back the Planet, Longclaw was killed by the Eggman Empire, which had a large emotional effect on all of the Underground Fighters. Katie was very sad about it, since she knew Longclaw for most of her life, but was also devoted to taking her place as the leader. Ariel was also sad, since she had already experienced the death of her parents. Owen was mostly devoted to getting revenge on the Eggman Empire.