Jethro and Joel Were a Troll (film)

Jethro and Joel Were a Troll is an upcoming film based on the book by Bill Peet.

Coming soon in 2020's.

Synopsis
The good half of a two-headed troll gets them both in trouble when he lets the bad side rule for a day.

Characters
(Any ideas)
 * (?) as Narrator
 * (?) as Jethro
 * (?) as Joel
 * (?) as King
 * (?) as Fabian
 * (?) as