Literature
Top 10 Transformers Deaths
10. "I'll kill you...Mine...All Spark!"
Who?=Megatron, Transformers (2007 movie)
Why?=Megatron's greed and ambition was driving him mad, reducing him to a psychopathic beast with no concern other than the All Spark. Chilling
9. "Can't... pull in... any more fragments... only... one way..."
Who?=Prowl, Animated, 2009, episode "Endgame Part 2"
Why?=Prowl gave up his spark, which was his soul, not just his life, in order to shield the city of Detroit from the self-destruction of weapon of mass destruction. It was noble and selfless.
8. "In all my life, I've never done a thing worthy 'til now... Optimus, take my parts, and discover a power