This Character was given −2000 power by the [On Play] effect of [OP01-006 Otama] and K.O.'d. I then used its [On K.O.] effect to play this Character. At this time, is this Character played with −2000 power?

No, it is not. When this card is moved to a different area, it is treated as a different card.

Marco OP02-018_p1 - One Piece Card Game | OPTCG.GG

Marco [OP02-018_p1]

Card Description

[Blocker] (After your opponent declares an attack, you may rest this card to make it the new target of the attack.)[On K.O.] You may trash 1 card with a type including "Whitebeard Pirates" from your hand: If you have 2 or less Life cards, play this Character card from your trash rested.

Card Details