Gravitas

Gravitas is an ancient Cybertronian in the Generation 1 continuity.

We do not know if his fellow council members include "Grippy" or "Megamerican."

Gravitas is an esteemed member of the Council of Ancients. For countless ages, he and the council have used their (allegedly) divine-inspired wisdom to choose a bearer for the Matrix of Leadership. When one Prime falls, another is chosen to take his place. Gravitas knows whispers of a grand plan for Cybertron, one spoken from a mysterious source.

Fiction

Dreamwave Comic Continuity

The War Within

Gravitas summoned the archivist Optronix to the Iacon Chamber of the Ancients, and told him the Matrix had chosen him to be the new Prime. Optronix wasn't particularly convinced. Gravitas was the one who led the ceremony where Optronix recieved the Matrix and become Optimus Prime.

Gravitas and two other members of the council were killed when Iacon was struck by sub-surface tremors caused by Starscream's re-activation of the planet-moving engines buried deep below the planet's surface.

From Teletraan I: The Transformers Wiki, a Wikia wiki.