I had this idea not so long ago and I already made some pretty sweet art 'bout it, but the perks i came up with didn't really feel that unique or creative, so i trashed that thought.
But after looking at some of the extremely interesting and fun ideas in this discussion, i got some inspiration and this is what i ended on after some thinking:
Lore, The (something)
Stats: 175hunger 200sanity 100health
Quite the company: Has a nice sanity aura about 2.5 - 3 sanity/min
Perfect Timing: Attacking right before an enemy attacks cancels said attack. It has a very small window, and doesn't work on bosses / it has a certain chance of working.
Book Worm: Can read wicker's books
Easily Bored: He falls asleep/loses sanity after doing the same task for some time. For example: cutting down 3-5 trees, crafting 3-4 items, planting stuff, harvesting, you get the idea.
Slow: Decreased movement speed.
Cheerful, but sarcastic and a bit of a smart*ss, He'd be around Wicker and Maxwell.