The many deaths of Optimus Prime

Oh, he's gone and died again. Botheration! Most inconvenient.

Across all continuities (except for the live-action-movie-verse, so far, and Robots in Disguise, though only just), Optimus Prime dies a lot. This happens for various reasons:

It allows for him to be replaced by a new character (and thus a new toy).
It allows for him to come back from the dead in a new body (again, a new toy).
It's dramatic (in theory).
It makes him into something of a Christ-figure.

Some examples:

Generation 1 Cartoon Continuity

The Transformers: The Movie

File:DeadPrime.gif

"Either that wallpaper goes, or I do."

The best-known example is from The Transformers: The Movie, in which Optimus Prime dies of wounds from his battle with Megatron. Famously, his body turns gray as he dies. (Urban legend says his body also crumbles, but no such footage is known to exist.) Being the first time he died, it was actually unexpected.

Season 3

He returns from the dead twice; first as a zombie under Quintesson control in "Dark Awakening" as part of a plan to destroy the Autobots, only to die again when he overcomes the Quintesson control through the power of the Matrix and possibly the strength of his will, and sacrifices himself to save the Autobots.

He then was brought to life again (for reals, yo) in "The Return of Optimus Prime".

Generation 1 Japanese cartoon continuity

On top of this list, the Movie and S3 deaths/rebirths counted too. Dying and coming back was practically a hobby for this Prime.

Kiss Players

Sometime between 2005 and 2010, Marissa Faireborn revives ~~Optimus~~ Convoy using the Galvatron cells in her body. Ultimately, all the cells are put back into Galvatron, and without them, Optimus promptly dies again.

The Headmasters

In The Headmasters, Convoy died again- in another act of self sacrifice, of course- when he walked into Vector Sigma and tried to bring it back under control directly in "Birth of the Fantastic Double Prime". His body turned gray as he died, followed by a (likely only symbolic) scene of him telling Rodimus Prime that it would be his responsibility to keep leading the Autobots and to continue his work, seen as a transparent, light-haloed figure against the sky and heard in third person narration as Rodimus stared into the sky. (Then again, given the proven existence of gho sts...)

Return of Convoy

Convoy returned as a zombie once again this time as False Convoy resurrected by Dark Nova in a plot against the Autobots, but this plan went awry when the other Battlestars managed to restore Convoy's spark with the power of the Zodiac, evolving him into Star Convoy. Return of Convoy The Battlestars

Japanese Generation 2

In the Japanese version of Generation 2, Optimus Prime was badly wounded by Megatron's fusion cannon and almost died, but was resurrected and evolved yet again, this time into Laser Rod Optimus Prime, by the power of the Matrix.

Generation 1 Marvel Comics

"I swear, I was wearing my faceplate when I left the house this morning."

In "Afterdeath!", Prime, after failing to live up to his moral principles while playing a video game, volunteers to be killed. The Autobots launch his funeral bier into space. Fortunately, the creator of the video game, Ethan Zachary, saves a backup copy of Prime's mind on a floppy disk. We first meet this virtual Prime sixteen issues later in "Pretender to the Throne!". He gets his new Powermaster body two issues thereafter, in "People Power!".

A previous attempt was made at making virtual Prime a new body in "Totaled!". The body spontaneously blew up.

About thirty issues later, Prime sacrifices himself to defeat Unicron, in "On the Edge of Extinction!". However, his Powermaster partner, Hi-Q, survives, and almost immediately begins babbling about how he's really Optimus Prime. This turns out to be true, and the Last Autobot metamorphoses Hi-Q into Prime (with a new Actionmaster body) in the last issue of the original Marvel US series.

Generation 2 Marvel Comics

Unleashing the light of the Matrix upon a great evil. Again.

This Prime wasn't done dying yet. His adventures continued in the G2 comics, and he died defeating the Swarm in the final issue of that series, "A Rage in Heaven!". The Swarm reconstituted him three pages later (in a body based on his then-current Combat Hero toy).

Beast Era

In Beast Wars and Beast Machines, you could mark the end of a season by the near-death experience of one Optimus or another...

At the end of the first season of Beast Wars, Optimus Primal piloted a bomb-equipped stasis pod in an attempt to destroy the Planet Buster. Unfortunately, Megatron had sealed the pod's hatch, and Optimus blew up with it. Early in the second season (a few hours later as far as the characters were concerned), Rhinox managed to unite Optimus's drifting spark with a blank protoform, thus bringing him back to life (and in a new Transmetal body, too).

At the end of second season, the Beast Wars Megatron came very close to killing the original Optimus Prime. But Prime didn't quite die, so we really shouldn't count it.

At the end of the first season of Beast Machines, Optimus and Megatron had a cataclysmic battle, using the energies of Vector Sigma and the Plasma Energy Chamber. This would have destroyed Cybertron, but Optimus took the warring energies into himself and disintegrated. However, his spark was trapped within the Oracle, and the other Maximals convinced him to return to the real world at the start of second season. The Oracle kindly gave him a new body (which, believe it or not, was not a new toy).

At the end of the series, Optimus gave his life to defeat Megatron once and for all, pushing him into the technorganic core of the planet. In assorted ancillary media (convention comics, text stories), he comes back to life yet again.

(Strangely, the end of the third season of Beast Wars had no Optimus deaths whatsoever! A half-dozen o t h e r s died, but not Optimus. Bizzare.)

Unicron Triology

File:Sshot-arm-39-4.jpg

Now Optimus, don't go all to pieces. You say you have to split? Well, you're a chip off the ol' block.

Armada cartoon

In the Armada episode "Crisis", Optimus Prime used his body to block the blast of Megatron's Hydra Cannon, protecting the Earth. When the cannon's energy is spent, we see Optimus turn grayish-white, then actually crumble to bits. A bunch of Mini-Cons use the Matrix to resurrect him three episodes later.

Armada comic

The corpse of an Optimus Prime (killed by Unicron) from an alternate universe appeared in the Armada comic issue titled "Worlds Collide, Part 1". Yep, practically all we know about this Optimus is that he died. He doesn't turn gray, but his colors are faded.

Universe

The corpse of an Optimus Prime (killed by Megazarak) from an alternate universe was cloned by Unicron to create Nemesis Prime. The clone, before he became Nemesis, appeared in Universe comic issue "Balancing Act, Part 2". Once again, practically all we know about this Optimus is that he died.

Movies

~~It'll happen. Eventually. Trust us.~~

Transformers The Game

In Decepticon mode storyline, Optimus Prime is beaten to the ground, and as he crawls for the All Spark, Megatron smashes his head with his flail ... poor Prime, he gets the most violent death.

Titan Magazines

In an alternate timeline, Optimus was left in a frozen, near-death state. Twilight's Last Gleaming, Part: 1

Transformers Animated

Dead in the third episode for 75 seconds. It's a new record!

In the third part of the Animated movie, "Transform and Roll Out!", Optimus Prime dies after his battle with Starscream. Like the Generation 1 Prime before him, he turns gray upon dying. Seventy-five seconds later, Sari Sumdac uses the mysterious Key to revive him. It's a new record, Primey!