Two character concepts I’ve had recently are as follows.
Someone who has been permanently deafened by their master as a symbol of their subservience. (NPC)
Someone who has had a significantly traumatic experience, and as a result, has PTSD. (PC with the haunted one background)
Both of these concepts require a nuanced approach. For example, I recognize that concept 1 would have trouble communicating verbally, and I don’t want to play this character with an off-the-cuff Hellen Keller impression.
How can I explore these and other character concepts in a way that would not be offensive to any affected parties?