Differences between popular fanon and IDW G1 canon:
Popular fanon: Optimus was a devoted spiritual leader.
IDW G1 canon: Optimus was an atheist.
Popular fanon: Rodimus was a young yet capable leader.
IDW G1 canon: Rodimus was a man-child.
Popular fanon: Arcee was a people-person with gentle spark.
IDW G1 canon: Arcee was socially awkward and undefeatable warrior.
Popular fanon: Bluestreak was a sweet woobie who needed a hug.
IDW G1 canon: Bluestreak was a traitor.
Popular fanon: You can trust Prowl.
IDW G1 canon: You cannot trust Prowl.
Popular fanon: Jazz was a charming social butterfly that could woo anyone, no matter what species they were.
IDW G1 canon: Have you seen how awkward Jazz was trying to reach out to that girl?
Popular fanon: Orion Pax was a nerdy bookworm with kind heart and hidden courage, hated violence and good at diplomatic.
IDW G1 canon: Orion Pax was a super cop, diplomatic was not his strong suit, and when really, really angry he quick to resort to violence (asked Prowl).
Popular fanon: Sideswipe was a witty prankster and talented merchant.
IDW G1 canon: According to TV Tropes, Sideswipe was a dumb muscle.
Popular fanon: Sunstreaker was the writers’ favourite twin to kill in order to induce angst.
IDW G1 canon: Sunstreaker was Simon Furman’s favourite plaything.
Popular fanon: Ultra Magnus was Optimus’s brother.
IDW G1 canon: Ultra Magnus was a legacy.
Popular fanon: The Dinobots and the Protectobots were Ratchet and Wheeljack’s children.
IDW G1 canon: They were not related.
Popular fanon: Swoop was the Dinobots’ field medic.
IDW G1 canon: The Dinobots used to have a medic and he was not Swoop.
Popular fanon: Perceptor was never wrong no matter what he did (and he was awesome even without a sniper gun).
IDW G1 canon: Perceptor sometimes did something wrong…
Popular fanon: Elita-1 was a badass female leader.
IDW G1 canon: Elita was a badass female leader and evil.
Popular fanon: Jetfire/Skyfire was Starscream’s Morality Pet.
IDW G1 canon: Did they ever interact with each other?
Popular fanon: Combiners teams were siblings and were a norm in Cybertronian society.
IDW G1 canon: Combiners teams were five or six unrelated bots forced to join together and were considered perversion by some.
Popular fanon: Sideswipe and Sunstreaker were inseparable.
IDW G1 canon: Sideswipe and Sunstreaker had strain relationship.
Popular fanon: Ratchet was grumpy and caring.
IDW G1 canon: Ratchet was grumpy and caring.