Ah, my first fur affinity submission! This here is my starfox fan-character Isabella "Crystal" Sapphire:

Ever since the death of James McCloud, the people of Katina have been working on a plan to ensure the defeat of Andross. These people were quite certain that Fox would attempt to finish his Father's business for the sake of revenge, so they began designing a biological weapon that would be used as a last resort. Should Fox fail, she would go in and self-destruct with a radius wide enough to take out Venom's core. Before this plan could be put into action, the precious daughter of one of Katina's leading scientists died. The greiving mother used her daughter's DNA to create this weapon in the image of the girl. Upon completion, this weapon was given the same name as the dead girl... Isabella Sapphire.

This helped the mother to cope, but this new life was far from happy. She didn't enjoy anything that Isa did in her life, but she was afraid that she was expected to life just the way this girl did. Isabella met Fox on Corneria during an event with Katina's scientists. Since this was a part of the plan to give the team knowledge about the weapon, Fox, at least, had to attend.

Isabella ran out during the banquet after getting into an arguement with Jasper, (The dead girl's boyfriend) which cause alot of commotion. After she ran out and the fight ended, everything went back as it was. Fox, being concerned about her, followed after her. The two met and were friends since then. During their time together, Fox taught her that she has her own identity, and to solidify that, gave her the nickname "Crystal" (which actually pokes a little fun at her last name) and started introducing her as such.