The Dungeon Master Has Theater Chops

Harry may be more easily known in the internet age for digital media that just simply spreads with less effort. It would be remiss to ignore a successful musical that he was part of, Spring Awakening which won several awards.

Musicals are often more fast-paced than non-musical plays and also often have more moving around, requiring some athleticism. You also need the improvisational skills to adjust if and when something goes wrong.

Harry is going to have to keep many plates spinning with very creative people that will put his adaptability to the test and this background is good prep.

On top of that you can see his dramatic range from extra to main cast in the series The Last Kingdom. The gravitas required for a DM to hold our attention is certainly within Mr McEntire's wheelhouse.