Steampunk knight

A knight whose body is able to bend and stretch like rubber. Their body is able to move around swiftly letting them punch and attack easily. They are out on an adventure. They are a strong knight but are all on themselves and only uses their rubber physic fists. They can only talk with train like whistles and their body language but it’s always obvious what they mean. They cannot talk and everyone knows that so everyone’s used to it.