I don’t know if it’s my game that is bugged, but I really want to put zekrom in a master ball but it doesn’t work. is there any way to put zekrom in a master ball?
No, there isn`t.
Zekrom is a gift Pokemon in the game and all the gift Pokemon are always placed in a regular poke ball by default.
The only way would be to strat a new game and play on a randomizer mode and have enough luck to find a master ball and later a Zekrom in a wild encounter.
okay. thanks.