Number 3 has no real appearance, since she does not exist physically. However, she does have a voice which she prefers to use while communicating through the ship’s com system- that of a friendly, if not somewhat plaintiff, young girl or woman.

An attempt at creating sentient computer intelligence by Rachael Finn. It is unknown whether or not the Number 3 is truly sentient or just possessing of a highly sophisticated personality emulator.

Number 3 identifies Rachael as its mother, and Rachael has made claims that she reciprocates this identification. However, Rachael doesn’t treat Number 3 with much affection.

Number 3 claims she is denoted as such because the previous two attempts were failures.