No, the plaid thing is mostly an in-joke with enfjpuppettheatre.  Nearly everyone wears plaid at some point so it’s hardly the best indicator to find a picture or an interview with a flannel shirt.  More of a funny trend that keeps popping up.

There are a couple of things about Colin Morgan (that he is basically boy-enfjpuppettheatre being one) but I guess I’ll go with sense of humour.  Introverted INFJ humour tends towards the dark, blurted inappropriately.  Think a well timed punchline by someone with poor delivery.   I’ve found that it passes most people by (the INFJ spoke too quietly), or that people are so shocked to hear the INFJ speaking that it takes a while to process what they’ve said.  Usually the humour comes out of their Ni, so the logic leaps also confound a lot of people. (Personally, I find them hilarious.)

Introverted ENFJs can also be dark, but usually in the way where they’re telling a story in a way that makes the subject matter seem funny when it really isn’t.  They are more inclined to be ridiculous than dark, though.  They’re the sweetest, kindest trolls.  They have firm boundaries in dealing with people, and exposing their dark side is not the go-to – which is the ENFJ making themselves the butt of jokes.  Only with young introverted ENFJs (up to early 20s, at least), you will never see this unless they’re your friend, family or other trusted human.  They don’t deal very well with most authority figures.

Back to Colin Morgan, specifically his behind-the-scenes ridiculousness with Bradley James where he plays up the idiot shtick – basically classic ENFJ (I don’t know if enfjpuppettheatre even remembers this, but she once taped a note with a less pithy version of “Je suis Loser” to my door).  INFJs would not be able to forget they were being filmed enough to let go for most of the stuff they get up to. 

Colin does get nervous in interviews (he gets better at these the older he gets, and the only time he ever really says anything awkward is the first couple of interviews where he can’t stop saying “brilliant” in answer to every question) but he also smoothly never gives up anything spoilery and also keeps decent eye contact, which would be nearly impossible for a nervous INFJ.  At a convention, he was managing a room full of fans and fellow actors excellently, neatly slipping around potentially awkward shipping questions.  INFJs can have problems with questions like “What’s your favourite (fill in the blank)?” where they need a lot of time to think through their options and get annoyed that they have to choose between seemingly unimportant things (and will try to weasel out of giving an answer).  Like, I’m not saying he’s completely comfortable and outgoing around crowds of people, but they’re not exactly tripping him up or making him panic either.