In my view, the idea of a character interview as a way to promote a book is rather odd and challenging. Odd because the reader will not fully appreciate the interview unless they have already read the book. Challenging because you do not want to give away any important plot points. Nevertheless, I took up the challenge and created a light-hearted look at a modern-day interview of Graham, the angel of death who visits Fitzwilliam Darcy in 1815 England. The interview was posted at Janet Taylor’s blog, More Agreeably Engaged, and you can see it here:
https://moreagreeablyengaged.blogspot.com/2019/06/death-takes-holiday-at-pemberleykelly.html#comment-form