By age, who is your youngest character? Oldest? How about “youngest” and “oldest” in terms of when you created them?
Age-wise, Catrina is the youngest character, aged nineteen in the span of the first book. The oldest, currently, is Aisen, although I suspect that may not always be the case.
Speaking in terms of creation date would make Catrina one of the oldest characters; she, Fox and Attilla were the three characters initially written in the first draft of The Genesis. The newest addition to the VS universe would probably be Damien, a Slayer placed (slightly against his well) as second in command to Meredith Pearce, the city’s most recent Head Slayer.
If you are interested in doing your own 30 Days of Writing, here are the questions.