Curate, connect, and discover
Don't read if you haven't finished watching Dexter and Dexter New Blood.
I'm gonna ask opinions to people regarding Dexter's "companions" (like Harry is) throughout the shows so if you haven't finished them yet, you WILL encounter spoilers.
If you ignore the show's logic, which would make them hallucinations/Dexter's own conscience manifesting as them/Dark Passengers, what do you think Harry, Brian and Deb are?
Cause the original story was more supernatural than what they made the TV show to be so I was curious to know other people's own interpretation. Again, don't mind what the show intended, or what's logical cause of it but how YOU, personally, interpreted their portrayals.
Harry has been Dex's own conscience (seasons 1-4 roughly but I could remember wrong, correct me if so) mainly due to the fact that when he appeared it was always Dexter zoning out and talking with him inside his own mind.
While later (seasons 5-8) he was a ghostly guide of sorts. Specifically due to a line he said in 8x12 that went something like: "I never thought this day would come, the day that you wouldn't need me anymore" which I always interpreted as a ghost saying goodbye after having been kind of a guardian for a long time.
With Brian too it was both depending on the situation.
In his first appearance post-death in season 2 he had a small line of dialogue with Dexter that went something like: "You're still here" - "I never left" - "Yes, you did. I killed you." - "You just took my life." And I always saw that as a, and read it in between the lines, "You killed me but I wanted to stay so now my soul is bound to you" kind of thing.
Same in Nebraska, i perceived him as a ghost throughout the whole episode.
In some other occasions though it was clear it was Dexter hallucinating so back to my point, he was a mix.
With Deb it's actually easier. Since she was always somewhat kind toward Dexter (excluding when she tried to kill both of them and her, very reasonable, crashout when she found out what he was) I hardly doubt her in New Blood to have been a ghost.
I'm fairly convinced she's always been Dexter's own conscience beating him up on it due to the fact that he was ridden by guilt for not having stopped Saxon in time and for having pulled the plug on her (even though she was already brain dead by then).