|This article contains canon information corresponding to the Tales of Arcadia franchise. That means all information in this article is true and has appeared/been validated officially on-screen.|
After learning the location of Gaylen's Core, Toby calls Trollhunter Jim Lake, and Blinky advises the royals to consult the Soothscryer.
- Tatiana Maslany as Aja Tarron/Queen Coranda
- Diego Luna as Krel Tarron
- Nick Offerman as Varvatos Vex
- Alon Abutbul as General Morando
- Uzo Aduba as Colonel Kubritz
- Rodrigo Blaas as Gnome Chompsky
- Nick Frost as Stuart
- Andy Garcia as King Fialkov
- Kelsey Grammer as Blinky
- Emile Hirsch as Jim Lake Jr.
- Laraine Newman as Nana/Miss Janeth
- James Purefoy as Kanjigar
- Cole Sand as Eli Pepperjack
- Charlie Saxton as Toby Domzalski
- J.B. Smoove as Phil
- Fred Tatasciore as AAARRRGGHH!!!
- Reginald VelJohnson as Jerry
- Frank Welker as Luug
- Thomas F. Wilson as Coach Lawrence
- Bebe Wood as Shannon Longhannon
- Steven Yeun as Steve Palchuk
- This is the first (and only) appearance of Heartstone Trollmarket in 3Below.
- This episode also marks Blinky and Jim's only physical appearance in Part Two of 3Below.
- There is a book entitled A Brief Recapitulation of Akiridion Lore, similar to A Brief Recapitulation of Troll Lore. Toby lampshades this by exclaiming "What? You guys have one of these, too?"
- Krel's worst fear is Morando destroying Arcadia and all of the friends he's made there. Toby's (before his nana giving him kisses, as revealed in "Where Is My Mind?") is dieting.
- Toby (along with Aja) drifting down into the Deep along with his Warhammer is a possible allusion to Mary Poppins.
- Running Gag: Varvatos giving Krel, Aja, and Toby "incentives" by shoving/throwing them into the Deep. Later, AAARRRGGHH!!! gives him an "incentive" and tosses him over the Deep before following suit.
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