Mashato Basuka, a feisty tanuki with a bit extra. After a bit of sparring, it was discovered that wrestling was a bit more fair than sparring. They both seem to be having a reasonable time.
Another sparring partner is one of the ones who lives (for lack of a better term) at the castle in which Siege rents a room. All parties can really pull the stops out when everyone's already technically dead or equivalent.
Every so often a tournament will roll into town, to be attended by fighters who can go toe to toe with a millenia old living weapon.