Grimlock plays fetch. (2009)
the penultimate episode of Cybertron/Galaxy Force pays direct homage to Brave Exkaiser. (2005)
Galvatron gets drunk and goes on a rampage. (1998)
inspired by a throwaway line of dialogue from Beast Wars, the Legends manga depicts Arcee as Rattrap's aunt.
Mickey Mouse Transformers are released as part of the Disney Label toyline. (2009)
Action Master Thundercracker...well, just look at him. (1991)
Optimus totally doesn't forgive Grimlock. (1984)
Transformers "Battlin' Robots" and Walkie-Talkies. (1985)
Drift's Deadlock design in Cyberverse was based on a piece of fan art from Guido Guidi, which was itself based on G1 Springer. (Springer being a car/helicopter triple changer, like the live-action Drift) (2020)
Animated Sky-Byte has three different designs: the 'official' one from the Stunti-Con Job, another from the Allspark Almanac 2, and a concept sketch done by Derrick Wyatt. (2010)
the speculation surrounding what aspect of Starscream's personality Slipstream represents got so absurd that Derrick Wyatt would just immediately agree to whatever theory was put forth to him. (2010)
concept art for Transtech, an unproduced series that would have been a sequel to Beast Machines. The toyline would have comprised both G1 and BM characters. (2000-2001)
to promote the then-upcoming airing of "The Return Of Optimus Prime", 'Dark Awakening' was re-broadcast with a new ending narration. (1987)
The very first promotional poster for IDW's Transformers homaging the iconic Uncle Sam "I want you for U.S. Army" World War II recruitment poster. (2005)
after his business with the Transformers was concluded, Death's Head proceeded to have run-ins with The Doctor and the Fantastic Four. (1987-1990)
Bumblebee stars in a Superbowl commercial. (2011)
the guy who bought hundreds of Age Of Extinction tickets to spite his ex. (2014)
unproduced Arcee, Bumblebee, Cosmos and Shockwave figures from the Titanium line. (200?)
'Heavy Metal War' ends with the Decepticons all falling into lava, and Megatron declaring 'we will rise again', presumably done in case the show ended there. It is never shown how they got out of the lava at the beginning of Season 2, with them appearing as per normal. (1984)
Hot Rod is magenta in the 1986 movie because an early prototype for his toy was that colour. the final G1 Hot Rod toy was red, and to this day almost every toy released of him by Hasbro is red. (Takara meanwhile, are usually the ones who properly colour him magenta)
promotional trailer for the 1986 movie, featuring a whole bunch of footage that isn't in the final film....and Ultra Magnus in his Diaclone colours. (1986)
The Spanish (Latin) dubs of Cybertron and Energon are partially lost. Why they never got a DVD release like the rest of the shows is unknown. An infamous fandubber called Piero Gionti has possession of most of the chapters of the lost dubs, but has refused to release them.
Starscream and BB make a desperate attempt to save themselves. (1998)
The pop idol cassette Transformer Rosanna, from Kiss Players. Her name and colours were decided by moe idol Lyrian, who also voiced her in the Kiss Players radio show. (2006)
in the Rid 2015 tie-in comic, Fixit has his own copy of Swerve's My First Blaster. (2015)