Despite its cancellation, Harmony Gold provided the unfinished
Sentinels source material for adaptation by several different parties, resulting in several different versions of the same continuity. Macek's original outline and notes for the series were published by
The Donning Company as
Robotech Art 3: The Sentinels.
Novelizations In 1988, author
Jack McKinney completed a
series of novels of the
Sentinels storyline, released in paperback. • Robotech #13 - ''The Sentinels: The Devil's Hand'' • Robotech #14 -
The Sentinels: Dark Powers • Robotech #15 -
The Sentinels: Death Dance • Robotech #16 -
The Sentinels: World Killers • Robotech #17 -
The Sentinels: Rubicon Robotech #18 -
The End of the Circle (1989), although not technically a Sentinels novel, did wrap up all of the outstanding issues from both the
Sentinels and the first 12 books.
Comics The
Waltrip brothers adapted the novels into
comic books, though they diverged from the novels as the story progressed. The
Sentinels comics were published by
Eternity Comics, then Academy Comics. The storyline abruptly ended when Academy was unable to renew their license with Harmony Gold. The comics license passed to
Antarctic Press, who published
The Sentinels: Rubicon, which draws its name from the title of the fifth
Sentinels novel. However, the
Rubicon comic, instead of completing the
Sentinels story, is set years after the end of the Sentinels Campaign, and was not illustrated by the Waltrips. It was not popular with fans, due to the poor artwork and the lack of connection to
The Sentinels. It was cancelled after only two issues. The Waltrips returned in 2005 to adapt elements of the last McKinney
Sentinels novel into
Robotech: Prelude to the Shadow Chronicles, a
comic book miniseries which also serves as a
prequel to the animated
2006 feature film Robotech: The Shadow Chronicles. This prelude miniseries, while picking up roughly where the previous Sentinels comics ended, also acknowledges the official 2003 rebooting of the
Robotech universe. While the events of
Sentinels are still seen to have happened, it is now agreed that certain events and situations have been retconned both before and during the events in
Prelude.
Role-playing game Palladium Books had published a
role-playing game called
Robotech in 1986 that was based on the original anime television series. The following year, with the new
Sentinels storyline, Palladium adapted the
Sentinels material — and the move away from Earth and into deep space — into its
Robotech II: The Sentinels role-playing game. == References ==