Who die in transformers?

In the "Transformers" franchise, several key characters die throughout the various films and series. Notable deaths include Optimus Prime, who often faces demise only to be resurrected, and characters like Ironhide and Jazz in the 2007 live-action film. Many other Autobots and Decepticons also meet their end during battles. The series often explores themes of sacrifice and loss amidst the ongoing conflict between the two factions.