[quote=@DegenerateThree]
If I may interject, I've got no issues RP-ing with a character who communicates through signs. The manner in which how other characters deal with them would also make for some interesting ad-hoc development, I feel. 
[/quote]

And I have already provided the solutions:
-Writing
-Universal Gestures do exist, Even if two people speak two opposite languages, basic hand gestures are a thing: waving at someone, pointing at something, the gesture for cup and drink
-I was just adding the addition of Sign Language on top of that because forms of sign language do exist and we have evidence of them existing
-I also never fully stated the character doesn't talk, I haven't fully fleshed out the deafness of the character yet and how that affects him. I was simply asking if I was allowed to have the character.

But I, as someone with partial hearing loss, was just giving information in order to build the character and how he would communicate with others.