Demyx has a sitar...which looks nothing like a sitar (WTF)...which he uses to smack people upside the head on ocassion. The top of it has spikes coming off of it (since it's in the shape of the Nobody symbol and all that), which probably hurt. He's not all that good at physical fighting, but the sitar is sort of a focus for him as well as a weapon. When used in conjunction with his magic, he's a really annoying and hard-to-beat opponant. (Seriously. Try fighting him on Proud Mode. It SUCKS.)