Who is Red John

No theory, but some info:

Can you tell us anything about Episode 6.05 of The Mentalist? –Deshani

Before this Sunday’s episode, titled “The Red Tattoo,” is over, you will get a kind of whopping new clue to Red John’s identity.
Do you have any new info on The Mentalist, or have you already given it all to us? –Samara

Did you not see above that I watched this Sunday’s episode?!
Well, I can also share that one of the five remaining possi-Johns is
about to reveal a certain phobia. But does his fear thus rule him out…?
It’s been a while since we’ve heard something interesting about Cho of The Mentalist. Is there anything special coming up for him? –Sonia

What if I told you that Leverage fave Beth Riesgraf guest-stars
in this week’s episode, and that her cute-as-a-button character winds
up asking a certain stone-faced CBI agent out for coffee…? (Lucky duck.)

Argue on this theory or rate it.

plausible

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Asking for help here:

I was just watching the pilot episode and in the very opening scene when they're walking to the crime scene, Jane looks at the dead body being wheeled out and the camera lingers on the arm(which bears a tattoo of a skull that may be dressed as the grim reaper) of one of people working for the coroner's office. It's probably just a red herring but considering that Heller has stated that Red John is like a Where's Waldo and perhaps someone that's been there from the beginning, it's noteable. Anyone think this guy resembles anyone else we've seen? At first, I thought it might be Partridge but this guy has shorter hair and seems slightly taller

Argue on this theory or rate it.

plausible

unlikely

Theories of Marcelo (2)