Here's some candidates!

Caleb Hyles: Great energy, great singing voice! Hiring him on the side to sing a song could be a good call! https://www.youtube.com/watch?v=3lPqYlAYImo

Puffin Forrest:Hilarious guy with goofy antics! This guy could help bring more exposure to DDO https://youtu.be/4ZCIh_3b5K8

Dingo Doodles: Creative, and makes really fun to watch D&D videos! https://www.youtube.com/watch?v=i082uC-QNBY