Slippery Siv
At a glance
A short, slight human thief from Martira Bay whom the party freed from a cage in Castle Avernus and later restored from a mongrelman curse. He once worked as a burglar for the Kargat before stealing from Azalin.
Portrait

- Primary reference: Slippery Siv Portrait
- Canonical status: Visual baseline for Siv’s restored human form, wiry adult scale, narrow face, tousled dark hair, quick eyes, and practiced burglar’s bearing.
Known facts
- Received one of St. Andral’s sending stones before the company slept on the eve of the festival; Carver carries the matching stone.
- Was imprisoned in the castle’s magical menagerie.
- Introduced himself as Siv, or Slippery Siv.
- Is from Martira Bay and once performed thefts and burglaries for the Kargat.
- Stole something from Azalin and was imprisoned by the Dark Lord as punishment.
- Cannot estimate the length of his captivity because time behaves strangely within the castle.
- Begged the party for help, and Carver picked the lock of his cage.
- Warned the party not to trust the halfling woman held nearby; the group left her and the other creatures imprisoned.
- Was thrown back by a construct when Ignatius asked him to test the guarded passage.
- Took valuables from the treasury with Ignatius’s permission.
- Sold Rage a scroll of greater restoration for 100 gp.
- Joined the party’s exploration of the upper castle.
- Asked Carver to use the greater restoration scroll on his cursed form.
- Was fully restored as a human man in his late twenties or early thirties.
- Declared that “Slippery Siv is back” and pledged himself to the party.
- Accepted one gold piece from Rage to watch over the newly freed Voss.
- On returning to Martira Bay, remarked that the city had grown greatly during his long confinement and set out to reconnect with old contacts at Ignatius’s request.
- Reported rumors that “Jack” has been eating people’s legs.
- Found a drainage-system route leading to spaces beneath the Cosmopolis Club.
- Stole a journal from Rictavio’s room and displayed it to the party. Carver later read it; it maintained Rictavio’s persona and offered nothing especially useful.
- Received Rage’s request to watch Watcher House after the fire.
Current relationship
Restored companion. Siv appears grateful and has pledged himself to the party, but the object he stole and his reasons for distrusting the halfling woman remain unknown.
Current status
Last met at the Blue Water Inn before festival morning, now holding a sending stone paired with Carver’s. No report from his requested watch over Watcher House is recorded. His Martira Bay underground lead remains unexplored.
Related sessions
- Session 15
- Session 16
- Session 17
- Session 19
- Session 20
- Session 21
- Session 22
- Session 23
- Session 24
- Session 25
- Session 27
- Session 30
Gallery
- Slippery Siv Steps Free — Carver opens the cage as Siv steps into freedom inside Castle Avernus’s menagerie.
- Slippery Siv Is Back — Siv’s former bipedal mongrelman shape dissolves as the restoration returns him to human form.
- The Man Who Remembered Nothing — Restored Siv watches as Carver calms the prisoner Rage released.
- The Attic Coffins Open — Siv opens Black Lily’s attic coffin just before its tentacled occupant rises.
- Ooru’s Farewell at Har’Akir — Siv stands with the group as Ooru returns to Har’Akir.
- Breakfast at Mordenkainen’s Mansion — Siv shares a rare safe breakfast in Mordenkainen’s hidden mansion.
Open questions
- What did Siv steal?
- Why should the imprisoned halfling woman not be trusted?
- What form will his pledged service to the party take?