so mirror armor reflects stat lowering effects and I know if he got overheat it will not give them an -2 sp.attack but! that means his stats can't be lowered cause of mirror armor so if you give him an eject pack any stat lowering move he uses thats a pivot move without abilities like intimidate!
does he have ANY moves that could switch him out paired with an item? (scarlet)
*I tagged it future sensitive cause his moveset could change right?