Stanpylonghead. I like his funny voice, I like his reactions to everything. He's not even in Hardmode yet though, but I'm excited for him to find the Hallow biome when he gets to Hardmode, I know he'll like it there.
Yrimir, I love his awesomeness. I like him a ton too.
I loved PBG's Hardcore LP as soon as I found out JonTron's in it.