So, because you asked, here is the first sketch I ever did of Kylie, before she had a name. This was done very early in development long before the show was pitched to a network. Executive Producer Richard Raynis was still in the process of figuring out who he wanted in the team. I intended to throw as many female characters in the mix as early as possible. The first design, in the lineup above, evolved into Lucy, who became Garrett. The third one Richard rejected outright because it looked to close to a family member of his, which creeped him out.
The middle character, the Goth, he liked and wanted to develop some more. It was his decision to make her diminutive, we struggled for a bit over that. Anyway this is how Kylie began, as a part of a character smorgasbord.