Who is Red John?

Brett Partridge.

S2E10 

We saw Patrick's teenager ages as " Wonder Boy" , at the background of van there is pyramid incomplete and on the top of that pyramid you can see boy's head (ANOTHER ILLUMINATI SYMBOLISM) 

So, Red John will be a physic person a REAL PHYSCIC who is managing s demonic/satanic organization against Visualize. 

Jane always said there is no such a thing a physic, Red John will be.

Nick Nordella that we will see in next episodes is not necessarly a younger version of McAllister or Haffner.

Don't you think he could also be a young PJ?

All in all RJ seems to be somehow linked to PJ past....

Let's focus on the question that How can Red John know Jane's happy memory? It can be explained in several ways. Jane's most vulnerable moment lying in hospital Red John got close to him to reach information or Red John is someone very close to him/ know someone very close to him. This option also brings to our mind his father. Last time we saw him when Jane escaped from the circus. Hereby, he lost Jane with a generous income and this left him in a difficult situation. Also we do not know much information about his father. In other words, they do not have good father-son relationship, I mean his father as valuable as gold mine for Red John.

Cho never change faces and he is always like: -_-

Haffner likes to appear as if he's someone important, a kind of a tough guy full of himself  -- and yet turns out he's afraid of a little spider.   BUT that doesn't mean that Red John is ARACHNOPHOBIC [because Haffner is probably not Red John]

McAllister walks rooftops, shoots anything with a face -- and yet flinches when a bird suddenly flies by --- AND that doesn't mean RJ is ORNITHOPHOBIC either [because McAllister is likely not Red John either]

Anything POINTED out to us [instead of revealed in a way that makes sense to the story] is probably not important as a clue, but more something we can use in process of elimination

        AND --- NICK NORDELLA, who is apparently playing the younger version of "someone" coming up [supposedly Haffner or McAllister] -- is ALSO being POINTED OUT to us.  

SO, the FACT that we KNOW this information already -- and we haven't even seen the episode?  HE'S NOT RJ.  But more likely, he knows him or comes across him somehow.   

O'laughlin was following Rigsby and Vanpelt from FBI , O 'laughlin explained this as we are looking for Bret Stiles and Visualise for couple of years ,

O'laughlin was working for RJ , so RJ and Visualise are against each other. 

Tyger Tyger organization is created by RJ , agains Visualise members inside the Police. 

Haffner cannot be RJ so, because he is still a Visualise member.