Apparently, in one of the What If... timelines, Rodimus Prime existed for about 10 minutes when Megatron forced Hot Rod to open the Matrix and destroy Unicron. He was then cannoned by Megatron and thrown into the smelting pits.
Decepticon World universe
- 1986 - The All Too Brief Reign of Rodimus Prime: For a brief, but significant moment, the Autobot Matrix of Leadership returns to the Autobots as Hot Rod uses it to destroy Unicron. However, Megatron ensures that this brief moment of triumph is squashed quickly.