This article describes a custom creation, custom theme, or other fan material, made by a Brickipedia contributor. It has never been, is not, and will not be officially released.
Doomsday Machine is a set in Adventures of John and Jack
This set includes 4 minifigures. The Set includes The Doomsday Machine for Cryptor, a Mech for Jack and A Jetpack for John
The Machine and the Mech are appearing, but the chapter is unknown