have tried to steal many times on jr. gargoyles in gpq but the card won't drop, doesn't seem like a boss-type mob either because i can see the name and the HP of the mob the card does drop on kill though
I think they are made to cant be steal. Idk, to raise the difficulty of getting the card like mingu in dojo? But in the end jr.gargoyle is ez to get since u just need to wait the boss to summon them and kill untill u hit the set (used to saw a vid ergoth summon at least 10 waves x4 jr.gargoyles )
