Ment
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Probably the most annoying one. Not only in appearance (I still think it looks more like a passive gay boy than a girl), but also in terms of abilities. It slows down the game with its "Kimaseo," and it's just generally irritating. Especially when you defeat it with some monster or spell, and the opponent immediately summons another one. It's just unpleasant.
The other participants don't cause such disgust.
From my point of view, it's wrong to say that a card's effect is bad just because it's irritating when used by an opponent. That actually indicates that the card is strong, and therefore good.