Cyborg used plutonium blast ability to create a big explosion around. There was no Curse Skeleton or Lord Swordsman in the explosion. But Cyborg was sure it wasn't the case.
At the time, every creature that had heard of the explosion was swearing at the Cyborg. Naturally, these swearing people were their bandmates. Because they made a deal. They weren't going to make much of a scene during the war, and they were going to make sure that the creature at the galaxium level didn't wake up. Cyborg, on the other hand, made a big noise, and it got a little. But after a little thought on it, no one would say anything about what Cyborg did. And the reason for that was quite simple. Cyborg's being was the Curse Skeleton, a creature that the creatures within the other group were afraid to fight. That's why they forgave him this time.
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Cyborg noticed the Curse Skeleton when he examined the area a little bit more. But Lord Swordsman was gone. At least he was sure of it.