Sylvemix is a 5'5 sylveon and Sylvester's long-term partner.

She was born with a genetic mutation that caused her to be half normal sylveon and half shiny sylveon. She is the oldest character and the first fursona ever used to represent Felix.

Sylvemix's story begins shortly after the beginning of her freshman year in high school, where she would meet her best frenemy (and later, her lover), Sylvester. 

Sylvester and Sylvemix's earlier days were hectic, with the two having drastically different personalities that often clashed.

Eventually the two came to realize that they had repressed feelings for one another. They would later buy a home with their friends in 2015 then eventually move to a smaller house in a quiet town around December 2020. (Which also happened to be near a new apartment complex.)