User blog comment:Jkphantom9/I'm sorry, but I had to write this rant down.../@comment-9464517-20150809014404/@comment-25555436-20150809014822

Sun not fighting for all of Vol.2 was because of his weapon's rig, though I'm not particularly sure why Monty didn't simply use the rig the weapon used in Vol.1.

By now Monty, or someone at least, likely finished the rig and made it work right, so Sun may have at least 1 fighting scene.

Actually, they will only have 1, a fight in the tournament. RWBY and JNPR are the only ones that will have more than 1.