I'm not interested in your PCs (or PCs you've heard/seen elsewhere), I want to know what the best PC someone else has played at a table with you is.

One of my friends doesn't have lots of TTRPG time, so generally just joins the odd fantasy game with the same character at different levels: Himbo Clerrick. Himbo lives up to his first name, being utterly gorgeous (think young Fabio on the cover of some sword and sorcery romance novel), incredibly heroic, and incredibly dense and oblivious, but not to his second name, being a Paladin.
Himbo had been a simple monk who had taken a vow of chastity to serve his god, but his incredible looks put the other monks' and nuns' vows in danger, so they gave him some weapons and armour, told him to go fight the forces of evil for his god, and then took a very cold bath. Powered by his devotion to his god and complete asexuality, he now travels the land looking for evils to defeat and goods to do.

Now, I'll admit the player has an impressive CV to begin with (experience in film and TV leading to setting up his own media company, Cambridge Law degree, nationally ranked cross country runner, decent jazz saxophonist, amateur boxer, etc), but Himbo inventively combines and subverts tropes in a way I only otherwise see from very experienced players, and the player has been happy to dive into and engage with the worlds as Himbo from the word go. Makes a great change from the people whose first character is Half-Elf Ranger #3752 and are scared to say or do anything even when directly asked.