One thing I really found interesting was that in Red-Listed (Season 6 Episode 4) Kirkland said that his twin brother, Michael, had serious drinking problems like his father and Red John approached him about them. Well, Visualize specializes in drinking problems so it would make sense if it was Stiles. Also, the reason Kirkland didn't see him is because I remember in the episode that introduced Visualize that a visualize member had to break off all connections with his family so he can find his true identity. Personally, I don't think it is Stiles but I wanted to make this point.

I really dont know who red john is, i mean i have a theory, but hes just a geeky lab guy that we havnt seen in like 30 episodes.  Asides that, lets talk about matthew Kirkland for a second.  It is completely possible that its him.  Reasons being, when rob talked about his brother, he says he met some guy, changed him, he wasnt the brother he was before.  What if Mat met styles, and the reason mat drank was because he had violent urges.  If styles told him to act on them, showed him how, explained that he shouldnt be bothered by morals and such.  Allowed him to be unincumbered by the emotions that seemed to be destroying him.  created red john.  Looking at any point in which rob is on camera, one could almost say that it was his brother.  One question i have is why the hell did rob kill the guy in the room before interrogating him, and asking him about rj?  the whole thing about do you recognise me, in this case could be reffering to red john asking him if he sees him.

Next theory.  Look at the tyger tyger conspiracy.  is it plausible that red john isnt one guy.  I mean he seems to be everywhere, can do everything, is really smart.  who thinks that red john is the entire tyger conspiracy?  

alright, what do you think?

Hi, here's my theory

Bob Kirkland: He just want to find who Red John is.

Brett Patridge, Sherif McAllister, Reede Smith & Gale Bertram: Members of the tyger tyger organization.

Brett Styles: Boss of the tyger tyger organization. (Episode 7 of season 6 is called "The great red dragon" and i believe that the great red dragon is Brett Styles so maybe in this episode, we'll discover that he is the boss of this organization)

Ray Haffner: Red John (He didn't kill Lisbon cause he loves her, good whistler and blablabla..)

I’m not positive who Red John is, but will make the
following observations.

 

Heller said there was a clue in the final sequence of S06
E01.  That can be a number of things: the
666, the pigeons, the knife, but I tend to think it has to do with the clown face
on Lisbon.  Something tells me we’ll discover RJ was a
part of the carnival at some point in Jane’s life and that he resents Jane.  I wouldn’t be shocked if RJ knew Jane in the
carnival and was jealous of his life with Angela and Charlotte.

 



Tangie Ambrose will be a guest star in E08, “Red John,”
playing Samantha Barsocky from the carnival circuit.  This tells me there is some connection with the carnival.

Nick Nordella will play “Young Man” in E07 and E08.  Check out his twitter feed at https://twitter.com/nicknordella
.  I think he’s trying to hint that he’s
playing a young RJ.  His description
would match a young Haffner, MacAllister and even Bertram.



There are still things about Van Pelt that remain mysteries
– her psychic aunt, her sister’s suicide, the deep secret she’s never shared
with anyone, etc.  I feel that RJ plays a
part in her life and that she may have a vendetta against him, as well.

 


It seems to me that RJ is killing people associated with the
Tiger organization.  I know he himself
uttered it to Jane, but maybe they’re also enemies of RJ?  But maybe not, since Smith killed Kirkland.  Who knows?

 



S06 E05 is entitled “The Red Tattoo.”  Perhaps “he is mar” is “he is marked”?  The titles of E06 and E07 are “Fire and
Brimstone” and “The Great Red Dragon”. 
These are images from Revelation, as is “the mark of the beast,” so for
now, my bet is that “The Red Tattoo” also has apocalyptic undertones.  



I’m not really sure who RJ is.  The 7 heads of the dragon is an interesting
theory and would explain why it’s hard to pinpoint RJ to one individual.  But it could mean other things, too, ie,
healing of a fatal wound, etc.  Still,
I’m just not sure.