This is my Cameo for SoTS, Bat! He's a loner character and pretty much the opposite of immediately friendly. You come on his turf, you likely won't be leaving in one piece. You can change what you want but one factor I'd prefer to stay would be their ears. He has huge ears and excellent hearing, which is why he's called Bat (alongside his dark fur) While he may not like you very much at first, if you become his friend he'll protect you for life. It doesn't really matter to me whether or not he speaks, but I think there might be a fun dialogue you could come up with for him if you decide to do that.
For anyone else looking at this, this is for a comic by @BreezyFeathers called Song of The Stars. Its super good and I'd suggest checking it out!