I've played a mute Great Old One warlock who communicated exclusively by telepathy and the occasional illusion.

I also made a half-orc cleric of Gruumsh who believed that it was time orcs stopped their raids and wars and lived peacefully amongst the other races. The emergence and divine support of of the Many-Arrows kingdom was proof enough for him that Gruumsh felt the same.

Also, an awakened skitterhaunt dark hairy spider warlock. Hide and move silently scores in the mid 40s, Hide In Plain Sight, and a variety of invocations to go with it. He'd have been a great stealthy character if the GM hadn't nerfed him.