He knows more than anyone else how similar he and Helios are and also why the two of them are different. The stigmata on his back allude to a very odd similarity between the two of them.
The Colossus continued, "Anyways, it can't be the Celestial Supreme because he said with uttermost certainty that the god that helped the ant is new and is definitely not a Celestial."
His mind reeled with the information but he didn't show any outward signs that will betray the importance of the information to him.
"That makes sense."
He doesn't think it makes sense actually. You can't trust the words of someone you suspect. The fact that the Celestial Supreme is under suspicion should mean whatever he says is suspicious too. But he said it makes sense so that this conversation will end and she will leave him alone.
His reply did the opposite. She sidled to him and spoke in a low voice.
