Staff Customs (That I know of)

X-Frisk, X-Chara and X-Sans (Haven't seen X-Sans). X-Frisk Owner: Slaneesh. X-Chara Owner: Nariko!Hana. X-Sans Owner: Idk.
I haven't seen X-Frisk, but all i know about X-Chara is that they can shoot X shaped slashes from their weapon and they can use a very spammable teleport.