Party Crashers is the eighth episode of 3Below.
An incoming message from Akiridion-5 alarms Vex. Meanwhile, the arrival of bounty hunters ruins the royals' outing in the woods with friends.
- Tatiana Maslany as Aja Tarron
- Diego Luna as Krel Tarron
- Nick Offerman as Varvatos Vex
- Glenn Close as Mothership
- Nick Frost as Stuart
- Hayley Atwell as Zadra
- Steve Alterman as Seamus
- Darin De Paul as Zeron Alpha
- Ann Dowd as Zeron Omega
- Andy Garcia as King Fialkov
- Jennifer Hale as Izita
- Cheryl Hines as Momblank
- Tom Kenny as Dadblank
- Laraine Newman as Miss Janeth
- Cole Sand as Eli Pepperjack
- Yara Shahidi as Darci Scott
- Lauren Tom as Mary Wang
- Frank Welker as Luug
- Bebe Wood as Shannon Longhannon
- Steven Yeun as Steve Palchuk
- This is the second episode to directly feature the Trollhunters, albeit with a brief, non-speaking role (a scene from "For the Glory of Merlin").
- This episode marks the first official date between Aja and Steve. Although cut short, Aja is really starting to develop feelings for Steve throughout this episode.
- In this episode, with the continuous teasing from Mary and Krel to Aja, Mary created the name "Staja", and Krel made it a ship between Steve and Aja officially.
- Zeron Beta is killed by Varvatos Vex in this episode.
- Steve briefly lampshades Eli's change in voice (an inside reference to Cole Sand's aging).
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