Almighty Zard
He has returned.
DEM Gigavolts Z Move I suppose. Sure Guzma COULD call that out, but doesn't mean they will, when was the last time a bad guy was complicated enough to challenge a hero's victories?
Because it fits his character, he despises the island challenge as a whole, and hoarded bugium-z so no one could be a better bug trainer than him, so seeing him call Ash out for having to use a Z-move to win is more reasonable than one would think.