The three elders were obviously men and were the ancestors of the Caltu family. All three of them were super experts at the same level as Oliver, but there was one of them who was significantly stronger.
His strength wasn't as simple as saying he was superior to Oliver's. Andrew took a good look at him and thanks to Fluffy's help, he understood that he was even more powerful than Sansa who at this moment is the most powerful force at Andrew's disposal if he didn't take into account his ability to give his body to Fluffy.
This powerful old man seemed to be the leader and that was why he was the one who spoke first. "Boy, you are a strange entity. You don't seem very strong, but my intuition tells me that you are more than what you show," the old man began to say.
