They float around, drop cryptic one-liners, and somehow still manage to be more emotionally complex than most living professors. But here’s the twist: several ghost backstories were planned by J.K. Rowling and were either never fully explained in the books or were cut entirely from the final canon.

Let’s lift the (plasma) veil, shall we?

1. The Fat Friar — Hogwarts’ Most Wholesome Tragedy

We’re told he was executed by his fellow clergy for pulling rabbits out of communion chalices and curing the pox a little too cheerfully. But here's the part that didn’t make it into the books:

Rowling hinted that the Fat Friar may have been excommunicated for dabbling in real magic, not just tricks.

His backstory was originally meant to explore how religious institutions suppressed magical talent, especially among poor, kind-hearted figures like him.

Unwritten moral: Nice guys get cursed into obesity and ghosthood when they threaten institutional power.

2. The Bloody Baron — A Gothic Nightmare with Layers

Yes, he murdered Helena Ravenclaw out of obsession and then killed himself in remorse. But what’s not in the books:

Early notes by Rowling suggest the Baron was once a dark wizard hunter, a sort of early magical enforcer, before going rogue. Some fan theories (based on cut content from Pottermore drafts) suggest he was in love with Rowena Ravenclaw, not just her daughter—making his act even more tragic and tangled.

Basically: imagine a ghost who’s both Gollum and Snape, but with more blood and chain rattling.

3. Peeves (Not Quite a Ghost) — The Spirit That Got Too Powerful

He’s not technically a ghost, but rather a poltergeist—a spirit born of student mischief. Here's the part that definitely didn’t make it into the films:

Early manuscripts suggest Peeves may have formed during the Hogwarts founders’ early squabbles.

Some theories suggest he’s the chaotic echo of the castle’s emotional history, growing more powerful as the student body becomes more stressed, angry, or divided.

So… he's basically Hogwarts’ magical mood swing made semi-sentient.

4. Professor Binns — The Ghost Who Forgot to Retire

All we know is that he died in the staff room and "got up to teach class the next day, not noticing he was dead." But:

Rowling once said she had a cut storyline where Binns was going to be a secret keeper of Hogwarts battle lore, knowing of ancient magical defenses and never sharing them because… well… tenure.

His character was almost used in The Deathly Hallows to reveal a key historical secret—but the scene was scrapped for pacing.

Missed opportunity: Ghostsplaining could’ve saved lives.

5. Moaning Myrtle — Tragedy Hidden in a Toilet

While we do get Myrtle’s basic backstory (bullied Ravenclaw, killed by Basilisk), Rowling originally planned a deeper dive:

In early drafts, Myrtle’s death was part of a series of cover-ups by the Ministry, since her murder took place on school grounds and was linked to the still-mysterious Department of Mysteries’ interest in death.

The ghosts at Hogwarts were supposed to be part of a larger afterlife ecosystem, but Rowling scrapped the lore because it "made things too sad and too weird."

Ghosts in Harry Potter were originally meant to carry more emotional weight and even plot-relevant secrets—many were cut for tone, time, or just being too unsettling. Somewhere out there is a version of the series where Hogwarts is less school and more spirit asylum with a tuition fee.