User blog comment:Anomymous Writes/Jason Todd on Young Justice/@comment-67.181.53.237-20120525043339/@comment-1038387-20120525202518

Actually.... the burden of evidence primarily lies with the side claiming he is Jason. Adhering to the null hypothesis here; he's not Jason until proven beyond reasonable doubt.

As for the evidence in favor: Beast Boy theorizes it could be the Toddster.

However, shooting down that evidence: The "Jason Todd" theory is mentioned, along with "long lost brother" and "evil twin". The entire board is nothing but an in-joke.

Ergo, Red X's identity is a mystery. End of story.