Alex makes his main appearance of the series in Sent

Alex Polchak is an adopted thirteen year-old boy living in the 21st century. He is one of the children taken from history. His original identity is Prince Richard, Duke of York, making him the biological brother of Chip Winston, whose original identity is King Edward V.

Alex lives at 3213 University Boulevard, Upper Tyson, Ohio, which is apparently a thirty-minute drive from Jonah and Chip's neighborhood. His mother is a university professor of Shakespearean literature.