9) Drax The Destroyer
Comic Books: Arthur Douglas was once an ordinary human, until his family was murdered by Thanos. Sensing his thirst for vengeance, the god-like being known as Kronos transferred Arthur’s soul into a powerful new body and so Drax the Destroyer was born. Originally, the character possessed the ability to project energy blasts from his hands and even fly, but mostly he sports super strength, reflexes and durability.
MCU: Drax’s backstory was completely stripped away for his appearance in Guardians of the Galaxy. Instead, Dave Bautista’s version was a regular alien who had trained himself to peak physical fitness in order to take down Ronan the Accuser, who was the murderer of his family in this continuity.
His personality was also vastly redeveloped, as the movie Drax doesn’t understand subtle emotional reactions and common turns of phrase. That said, this could be partially inspired by a period in the comics when his higher mental faculties were lost.