I don't remember Bilbo not killing things. Especially spiders, but I'm pretty sure he downed a couple of goblins too.
But to play a bard rogue, you just multiclass bard/rogue.
Woah, I never knew that was a thing! 😲 So, I'm thinking maybe I start the game as a jolly bard, and then when I reach a level I can multiclass (what level is that haha?), I'll combine with rogue! I'm learning so much haha!