Today the topic is favorite deity. Well, I’m Catholic, so I’ll go with, “God the Father, God the Son, and God the Holy Spirit.”
That said, within the context of D&D, as a player I don’t really have a favorite deity. My first and longest-played character, Lord Jon Korbok, claimed to follow the dwarven wargod, Clangeddin Silverbeard, but that was really more of an excuse for his violence. I’ve seldom played clerics, paladins, druids, et cetera. I did have a 1E paladin. I don’t remember him following a specific deity. The last cleric I remember playing was Zerubbabel Jangle, a 3.5E gnome cleric/rogue who followed Garl Glittergold.
As a GM, however, I definitely have some favorites, especially the Unholy Triumvirate of Erythnul, Nerull, and Hextor. These three were at the heart of many multi-part adventures I’ve run over the years. Most recently, I added Wee Jas to the mix in a campaign that could’ve seen Wee Jas destroying Hextor and absorbing his divine portfolio. Unfortunately, that campaign ended prematurely.