D'aja Vu
A giant troll wreaks havoc at the school science fair, threatening to expose both the troll world — and the royals’ true identities.
Collision Course
The royals take a driver’s ed class, hoping to find parts for their ship. Instead, they're led on a high-speed chase with the Zeron Brotherhood!
Beetle Mania
Royal super-fan Stuart offers to help eradicate an alien beetle infestation before it exposes the siblings' true identities.
Mind Over Matter
Krel builds a mind-reading device in hopes of blending in with humans. Elsewhere, General Morando dispatches bounty hunters to track down the royals.
Terra Incognita, Part 2
After crash-landing in the town of Arcadia, the royals — now disguised as humans — search for suitable technology to power their ship.
Terra Incognita, Part 1
When their planet's monarchy is overthrown by a coup, royal alien teens Aja and Krel flee to Earth accompanied by their brutish bodyguard.
The Eternal Knight Pt. 2
An epic battle comes to a head in the darkness as Jim and his friends push back against Morgana. But without Merlin, how will they stop her?
The Eternal Knight Pt. 1
The Eternal Night covers Arcadia in shadow, leading to a long-awaited showdown between Gunmar and the newly transformed Trollhunter.
Jimhunters
A greatly changed Jim renews his Trollhunter training but struggles to accept his new reality. Gunmar and Morgana rally the troops for an attack.
A House Divided
Merlin has a plan to go to war, but it's Jim's choice to make. Blinky and AAARRRGGHH!!! search for allies. Gunmar uses Barbara to get what he wants.