Evidence. Fine, here we go!
Rick Riordan's Blog
Q: Is Reyna powerful?
A: Yes.
Q: Is it a god that we have seen in the Percy Jackson/Heroes series?
A: No.
Video
I mean, come on, guys. Reyna 発言しました that she looked as if Percy had walked from her worst nightmares. Why does this matter? Read the 次 piece of evidence.
Summary From Very Accurate Library
Demigod Percy Jackson, still with no memory, and his new フレンズ from Camp Jupiter, Hazel and Frank, go on a quest to free Death, but their bigger task is to unite the Greek and Roman camps so that the Prophecy of Seven can be fulfilled.
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Do あなた understand what I mean? I personally believe that Reyna's dad is Thanatos, または whatever his Roman name is. What do あなた think? Comment.