Favorite Planar Being/Creature.
This is an easy one for me. I read a series of books by R. A. Salvatore and since then have reread and as I could afford purchased more of the series. Guenhwyvar is easily my favorite planar being as she is summoned by Drizzt Do’Urden to help him as an ally and not just a tool to be used. She is a main part of the story and helps Drizzt stay above his darker side as a drow raised in the city of Menzoberranzan.
A picture of Drizzt with Guenhwyvar.