Kevin Destructicon, best known as Professor Destructicon, is a minor antagonist in the Disney Channel series Phineas and Ferb, being featured in two cameo appearances in the episodes "One Good Scare Ought to Do It!" and "Rollercoaster: The Musical!". Despite his very minimal role in the show, Professor Destructicon was intended to be the main antagonist in an ultimately unproduced Phineas and Ferb theatrical movie which was in development by Disney around 2011, which would have revealed that he once worked for the O.W.C.A. as Agent Destructicon until he turned to be evil. However, due a series of unknown events, the film never got made.
In the show
In the movie
Circa 2011, The Walt Disney Company expressed interest in a theatrical Phineas and Ferb feature-lenght movie. Dan Povenmire and Jeff "Swampy" Marsh, the creators of the show, were brought to write the film's script and they approached series writer and storyboard artist Jon Colton Barry to pitch ideas for the film's story. Eventually, the three pitched an idea they all loved, which involved the appearance of Professor Destructicon, who was mentioned in the show as having been Heinz Doofenshmirtz's mentor.
The story for the film involved Professor Destructicon having once been an agent of the O.W.C.A. and Mayor Monogram's partner when he was younger. However, due unknown reasons, Destructicon decided to betray Monogram and almost destroyed the agency by trying to sabotage their new established "animal agent" program. An scene planned for the movie involved Mayor Monogram staring at a until that moment unseen photograph of him and Destructicon, beating up himself for never realizing that Destructicon always had secretly evil intentions. To make a great pitch, Barry asked Kyle Menke to produce a concept art for the scene, which is the one above.
Disney approved the pitch and the film was given a release date on July 26, 2013. However, Disney eventually moved the release date to 2014 but ultimately delayed indefinitely the film. It's fair to assume that the film has been cancelled since then, considering that Phineas and Ferb aired its series finale in 2015. Despite this, a television film entitled Phineas and Ferb the Movie: Across the 2nd Dimension was released in 2011 and a new television film entitled Phineas and Ferb the Movie: Candace Against the Universe is currently slated for a release in 2020 on Disney+. However, neither one has any relation to the cancelled theatrical movie.
- Had the movie been produced, then Professor Destructicon could have been considered the overarching antagonist of Phineas and Ferb along with Mr. and Mrs. Doofenshmirtz due their role in Heinz Doofenshmirtz's descent to villainy: while the Doofenshmirtzes were responsible for neglecting Heinz throughout his childhood, Destructicon would have been responsible for mentoring him into becoming an evil sciencist like him.
- It's unknown who would have voiced Professor Destructicon had the movie been produced. Danny Jacobs provided his singing voice in the episode "Rollercoaster: The Musical!", but given that Destructicon's role in the episode was a very minor one, it's not hard to consider that maybe the role would have been recast with another voice actor.