Professor Halvior Renn

Ghostly Mentor • Trapped Between Worlds

Appearance on the Material Plane (When the Thin Spot Strengthens)

When the planar thinning below the bricked shack grows strong enough, the ghost of Professor Halvior Renn slips through like mist through cracked stone. His form is translucent and flickers constantly, the edges of his robes dissolving into drifting shadow.

He appears:

tall, thin, and dignified,
in the simple robes of an arcane instructor,
with eyes like pale gray lanterns dimmed by grief,
and a faint stain of necrotic magic clinging to his chest—where the ritual misfired.

When the thinning is weak, he cannot manifest—only a whisper of emotion or a cold breeze lingers.

At peak strength, his voice becomes audible, though echoing and strained, as if spoken from the bottom of a well.

Personality

Professor Renn was once patient, wise, introspective, and deeply kind—a mentor beloved by all his apprentices. Those traits remain, but they are now overshadowed by profound sorrow and disorientation.

He is:

gentle and mournful,
burdened by guilt,
confused about time,
terrified of losing his memories,
desperate to ensure no one repeats his students’ mistake.

He often speaks in half-finished sentences, as though remembering his death interrupts his thoughts.

He is not hostile.
He is not angry.
He is simply lost.

Backstory

Professor Renn died peacefully of illness. His apprentices, refusing to accept his death, attempted a reckless necromantic ritual in the shack’s basement.

Instead of resurrecting him, the spell ripped Halvior’s soul from its afterlife and hurled it into the Shadowfell, leaving him:

severed from the cycle of life and death,
unable to move on,
and unable to return fully to the world of the living.

He has wandered the dark reflection of Lygos for fifty years, drifting through withered ruins and watching the echoing shadows of his students reenact their final moments.

He remembers everything.
He cannot forget any of it.

This memory is both his anchor—and his torment.

Ghostly Traits

When he manifests on the Material Plane, he is weak and fading:

Only visible when the thin spot is active
Voice audible only at its strongest overlap
Cannot manipulate objects
Cannot leave the shack and its immediate vicinity
Recognizes emotion, but sometimes forgets names or places

He has no intention to harm anyone. In fact, he is terrified of causing more tragedy.

What He Wants

Professor Renn is not vengeful—he simply wants:

✔️ His apprentices remembered kindly

✔️ Necromancy kept under strict control

✔️ Warning others about the dangers of reckless resurrection

✔️ To find a way to move on, if it still exists

✔️ To help—if he can

✔️ To atone for surviving when they perished

He may beg the players for help completing the ritual the right way—not to bring him back, but to break its hold and free his soul.

Or he may beg them to destroy the thinning entirely, though doing so risks catastrophic planar backlash.

Behavior When Seen

He drifts 2–3 inches above the floor.
He speaks slowly, as though remembering how voices work.
He sometimes starts a sentence in the present and ends it in the past.
He often looks over his shoulder at shadows only he can see.
He gently tries to shoo players from the shack—“You shouldn’t be here. No one should…”
He might try to reach for someone’s shoulder, forgetting he cannot touch them.

When he fades, the last thing to linger is his sorrowful eyes.

Possible Hooks

He warns the party that something darker has begun slipping through the thinning.
He asks the party to find the spellbook or focus his apprentices used.
He asks for a message to be delivered to a still-living relative.
He begs the party to seal the planar rift, though the ritual is dangerous.
He sees a PC and mistakes them for one of his apprentices, asking:
“…Lyra? You came back…? No… no, you’re someone else.”

Halvior Renn