9. His Father & Grandfather Created Drax To Kill Him
While driving through a desert with his wife and daughter, real estate agent Arthur Douglas' car was attacked by a spaceship piloted by the Mad Titan Thanos, because he thought the humans had seen him. As a result, believing that Thanos had gone too far, his father Mentor and his grandfather Kronos (both incredibly powerful beings themselves) imbued the spirit of Douglas in a clay body with a very clear and sole mission - the task of killing Thanos. The being created as a result would go on to be known as Drax the Destroyer. Of course, he has only succeeded once in his mission, while dying many times himself in the process, but it says something about Thanos when two people who should be very close to him wanted him dead. As a side note, Thanos' father Mentor adopted Douglas' daughter Heather when he died at the hands of the Mad Titan. She would go on to become the powerful telepath Moondragon.
