Sentinel Prime

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Sentinel Prime
Transformers character
Sentinel Prime's alternate mode in the 2011 film
Voiced by	Film and television: Jack Angel (The Transformers) Townsend Coleman (Transformers: Animated) Leonard Nimoy (2011 film) Jon Hamm (Transformers One) Games: Troy Baker (Transformers: War For Cybertron)
Information
Affiliation	Autobots (allied with Decepticons in some continuities)
Function	Autobot Leader/Commander, mentor of Optimus Prime
Alternate mode	Rosenbauer Panther fire truck (2011) Freight train (2016) Spaceship (2016)

Sentinel Prime is the name of several fictional characters in many of the Transformers series. The first mention of Sentinel Prime was in issue #65 of the US Marvel Comics Transformers series, where he was mentioned to hold the Autobot Matrix of Leadership before Optimus Prime.

Sentinel Prime is One of the members of the Dynasty of Primes and dedicated as the leader of the Autobots and has since appeared in a variety of forms as either Optimus Prime's mentor or friend. In the 2011 live action movie Transformers: Dark of the Moon, Sentinel was the main villain and was voiced by Leonard Nimoy. Sentinel was also the main villain of the movie Transformers One.