This card is bug because its removes counters even when it attacks directly which is not supposed to happen because counters are only removed when it battles a monster.
This card's image and text on this GameA page are not accurate for Duel Links. The card is "B.E.S. Big Core" in Duel Links and the card text says "if this card battled" so even a direct attack will cause a counter to be removed.
Kaizer
Lady Gago
Uroucyon_GameA