Dinobot (Beast Wars)

He fights alongside the Maximals as part of their crew before ultimately sacrificing himself to save a group of primates that eventually become the human race from a Predacon onslaught.

[3] When the Predacons scan the planet for local animals, in order to create beast modes for themselves, Dinobot receives the form of a Velociraptor.

[4][5] From then on, Dinobot serves alongside the Maximals during the Beast Wars, and proves to be a valuable ally in both strength and cunning, as well as in his knowledge of his former Predacon comrades.

[6] He infiltrates the Predacon base and steals two Golden Disks which contain information pertaining to the planet's vast supply of Energon, as well as the location of the Ark.

Although he is now aware that the future can be changed, Dinobot chooses to preserve history instead, and proceeds to single-handedly defeat all of the Predacons, proving to his Maximal comrades how guilty he felt about his prior actions and where he truly stood.

[8] The hominid that Dinobot saved finds his makeshift maul and uses it to defend itself against a snake, beginning humanity's technological development.

[8] Dinobot's earliest fictional depiction in comics was in a two part short story told in Dreamwave's Transformers: More Than Meets The Eye series.

As Dinobot dispatches a Maximal security agent, his leader obtains the Golden Disk and announces he wishes to be addressed as Megatron from now on.

He dies once more in the final struggle, remaining on board the shattered Decepticon ship Nemesis as it crashes, but is honored by the Maximals for his role in their victory.

In this story, Cheetor, Dinobot, Rattrap, and Silverbolt discover three Constructicons and some Predacons on prehistoric Earth and are joined by the Wreckers.

When the Decepticons travel back in time and meet the Predacons, looking for the Allspark, Dinobot decides that neither Megatron should have it after failing to make an alliance with Starscream and Blackarachnia.

This leads him to face both Megatrons and, despite being fatally wounded, he manages to recover the Autobot Matrix of Leadership, giving it back to Optimus Prime.