concept art for a Decepticon for Transformers: Hero. (2004) While he looks a LOT like IDW's Tarn, the similarities between the two are apparently complete coincidence, according to Alex Milne. (2019)
the Energon cartoon's wonderful CGI. (2004)
Hot Shot and Downshift drive through space. (2004)
Masterpiece Wheeljack's face can be removed to reveal a face based on Animated Wheeljack beneath. (2014)
Starscream, Blitzwing and Astrotrain carve their faces into a rockface.
Astrotrain's train army. (1985)
the "Cybertronian Warriors" pack released in the DOTM line references an incident that happened on the set of the movie, where the Bumblebee prop car collided with a Metropolitan Police Department SUV. (2011)
the Scout class figures from the Cyberverse line all have half-transformed alt modes, for some reason. (2018)
an issue of IDW's RID comic makes Steve The Vehicon an official character. (2015)
an Electronic Voice Synthesizer in the likeness of Ultra Magnus, that allows children to 'talk like a robot' by mouthing words into it. Since it can create synthesized speech from mouth movements without sound, the toy has been used as a replacement for electrolarynx devices.
Takara releases the 'Smallest Transforming Transformers' line, consisting of downsized G1 toys. (2003)
Gold Plastic Syndrome was a condition that affected many TF toys containing gold and/or metallic swirls in plastic over the years, where its plastic decomposes and becoming brittle to the point of shattering or crumbling under minimal-stress conditions. (1988-2015)
Starscream fires his null-ray from his finger. (1985)
According to screenwriter Buzz Dixon, Optimus Prime was to have a cameo in the My Little Pony Movie. He was to be asked by one of the Ponies for aid only to disappoint them, leaving the Ponies to instead enlist the aid of a drunken Shipwreck from G.I. Joe. (1986)
Optimus Prime proudly declares that he and the Transformers come from America. (1985)
Optimus Prime dies after being randomly shot during a random battle on Earth. (1987)
The RPMs Devastator Showdown track set fires the included car on a track to an area that releases a "wrecking ball" follow the car down the track. Yes, that means Devastator fires his testicles at you. (2009)
the McDonalds' toys of the Armada Autobots and Decepticons could combine into the "Mighty Robot" and the "Mighty Vehicle" respectively. (2002)
a Rhinox toy from American chain Checkers and its regional variant Rally's. (2000)
Japanese Prime McDonalds' figures. (2011)
the French version of the Animated McDonalds' promotion included a toy of Blitzwing, that was available nowhere else in the world. (2009)
this one Bumblebee toy from the Buzzworthy line seems to have a vehicle mode based on Bumper rather than Bumblebee. (2021)
the name "Megatron" was initially rejected by Hasbro due to the nuclear bomb connotation making the name sound "too scary". The name stuck after Bob Budiansky responded by telling them that the leader of the villains was supposed to have a scary name. (1984)
Soundwave pushes his own buttons. (1984)
G1 Shockwave's cartoon and comic characterizations are complete opposites, one being loyal and subservient, the other a power-hungry rival. This disparity was a result of lack of time during the franchise's production to get all the story basics established from the outset.(1984)