Roaming Fees May Apply is the sixteenth episode of Trollhunters.
The heroes launch a dangerous quest to find the first Triumbric Stone. Angor Rot concocts a charm that links Strickler and Barbara's fates.
Jim’s quest for Gunmar’s birthstone sends the gang deep into the heart of a volcano that is not what it seems, which leads to Toby and Blinky finding themselves into quite a predicament. Meanwhile, Stickler casts a spell on Barbara, which will send his pain to affect her as well, that way, Jim can't hurt him. Blinky also finds himself going through some shocking changes during his and Toby’s time in the volcano.
- Kelsey Grammer as Blinky
- Anton Yelchin as Jim Lake Jr.
- Charlie Saxton as Toby Domzalski
- Lexi Medrano as Claire Nuñez
- Jonathan Hyde as Mr. Strickler
- Fred Tatasciore as AAARRRGGHH!!!/Gatto
- Ike Amadi as Angor Rot
- Amy Landecker as Barbara Lake
- Thomas F. Wilson as Coach Lawrence
- Steven Yeun as Steve Palchuk
- First appearance of Gatto.
- Jim and his friends acquire the first Triumbric Stone (the Birthstone) from Gatto's Keep.
- Strickler uses Angor Rot's totems to place a binding spell on himself and Barbara Lake (meaning if Strickler gets hurt, Barbara will feel the same pain). He uses this spell to threaten and prevent Jim from ever harming him.
- The famed stock sound effect The Wilhelm Scream can be heard once when AAARRRGGHH!!! tosses over one of the Volcanic Trolls attempting to reach him, Jim, and Claire by climbing down a ladder.
- Getting Crap Past the Radar: While Jim and Steve are waiting for Strickler in the principal's office, Steve can be heard asking Jim "You think you can out-poop on me, Lake?" to which Jim responds "How can I do that, when you are the biggest piece of––" before he is cut off with Strickler's arrival, in an instance of a curse cut short.