After learning the location of Gaylen's Core, Toby calls Trollhunter Jim Lake, and Blinky advises the royals to consult the Soothscryer.
After learning that the king and queen entrusted Kanjigar to protect Gaylen's Core from the wrong hands, Aja and Krel contact Trollhunter, Jim Lake Jr., and his mentor, Blinky, who advise them to venture to Heartstone Trollmarket before Morando does.
- 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.