Reminds me of the time I ran Descent into Avernus and my party conversed with Jander Sunstar, a vampire, long and hard enough that I didn’t have the heart to make him turn into dust as the module said. He was freed and pledged his loyalty to the party. I had him show up a couple times to do cool vampire things to the party’s love and awe. It just reinforces my belief that Rule of Cool is above all. We’re all 9 year olds at heart.