Movie characters who completely changed over a franchise

I don't agree that Marcus changes in Crusade. We only see him at the start and end of Raiders and within his university. It's not too much of a stretch to believe he'd be clumsy outside of his element. He still gets in some badass moments like when he tells Donovan he's meddling with powers he can't comprehend.

Also, actor Denholm Eliot himself said he enjoyed playing Brody's more comical bits.