Question. Would Robin fit under being fake then? Or do you consider her now being Fake?
No... she isn't faking it... because we have seen her cheerful side more and more with the crew... and this is simply the result of having some character development which went from:
- Someone who doesn't trust anyone..keeps huge secrets... afraid of her crew turning on her at one point ----> a more cheerful/colorful... but her dark side is still there BECAUSE she was establised since she was 8 years during Ohara... in fact even before that being raised by her uncle with no mother.. no father... being somewhat alone EVEN IN HER CHILDHOOD... sure professor Clover was there... but still you can see that "Lone wolf" side from her when she met Jaguar D. Saul... as their dialog reflected her character that she is lonely... and doesn't have much friends who understand her... So she is not simply trying to "act" Edgy... it's simply no one has given her the chance to be their friends...
However at same time... the more she got to know Jaguar D. Saul... and the more she became friends with him... she started to laugh like him "derishishishi" iconic laugh... and when she LOST everything (her mother/Ohara/Professor clover/Jaguar D. Saul)
She reverted back to being alone... and she stayed that way UNTIL she met the SHs... until Enies Lobby incident... where she had BIG FEAR that the SHs will turn out just like everyone she tried to take shelter with... where they all turned on her once they realized how threatening the WG is...
But after Enies Lobby.. when Luffy challenegd the WG just to take her back.. that fear is gone... and as story progresses.. she is getting less dark and more cheerful if you haven't noticed.... and you can even look at her statement when Inuarashi warned her that maybe strong pirates will come after her during Zou arc.. and her reply was she has nothing to fear with SH on her side...
So... what I'm trying to say is that she was being mysterious and all... it was SITUATIONAL... and because of a past she cannot run from... however there is no mystery behind Robin right now by the way... she is BEING HERSELF.. with some dark humor but majority of time she is now smiling unlike before.... being true to herself and who she is...
Now... I do not like to bring comparison... but again I will revert back to Law... sure.. he had rough past... WHO DIDN'T have rough past in One Piece!
But during Law's childhood:
1- He had BOTH PARENTS.. and he admired both... stayed with both...
2- He had a sister who
3- He had SO MANY FRIENDS he played with.. and a Nun who took care of them...
And before all of the rough times that happened with Flevance country... he was ACTUALLY HIMSELF... Law's true self is friendly and NOT an edgy character....
Now, I can understand if he was being serious and all until the downfall of Doflamingo... but even after it.. even after Sengoku's words telling him "keep living forward" which is what Corazon would have wanted him to do.... he still puts on this fecade of "I don't care about saving civilians.. I don't care about good deeds" fake ass edgy attitude... It just doesn't work for me at this point...
And the proof that him being edgy is AN ACT and not his true self... is a specific scene on Sunny ship... when Sanji made food... and there were talks about going to Wano/Dressrosa without plans or being ready... and Law was angry at Luffy's carefree... anyway.. the talk was interrupted by Sanji making food for them... and the moment it was announced that Sanji cooked "Sandwiches"... Law's true nature appeared for a SECOND... and he said "I do not like bread"... and he suddenly had a look on his face like "crap I showed more emotions to this matter, I'm falling to their pace"
So... the point is he is trying to "HIDE" his true self... what he is originally like... while his edgy attitude is simply a fecade.. a fake front... while his original self is the Law who loved his parents... had a sister he cared for.. wanted to join her to celebrate the carnival... had many friends.. he liked being with them...
I hope you get the point.. sorry for writing long essays LOL.. but explaining character takes LOTS of details about small things