Methuselah

Methuselah dwarfs Protos. That's about ALL Methuselah does, actually.

Methuselah, or Methusula, is an ancient dead world.

Fiction

The Transformers cartoon

Methusula was an ancient planet near the center of the galaxy. When Primacron activated Tornedron, his former assistant called the Primitives to Methusula to explain the threat. There, the Primitives battled Tornedron and lost. Call of the Primitives Ask Vector Prime

3H comics

It was dead even billions of years ago when Primus chose its moon Protos as a prototype for the later Cybertron. Billions of years later, Methuselah still hid Protos in its shadow. Covenant

Animated cartoon

Methusula was a world located in Vok Territory orbited by Protos. The AllSpark Almanac II

Notes

• There is a real planet called Methuselah, believed to be the oldest extrasolar planet discovered. This is probably just coincidence, as the name refers to a biblical character who lived to be incredibly old.