I was looking through/kind of reading the Infinity War trade last week, and a good portion of the story has the two of them interacting and joining forces to stop the Magus (Who was the big threat for the arc.). Predictably, the two of them plan to double-cross each other and take the other one down after, but at no point or two was the ancestor thing ever mentioned or brought up. Also, during the original Secret Wars, Doom had Kang killed (Although he later brought him back.), but I don't think the relationship was brought up there either. So, I was wondering if the two of them knew that they had a relationship. Come to think of it, when was it first stated that Doom was his ancestor anyway? I THINK that it was during the Stan Lee period, but I've never read the full Doom and Kang origins from that era. Thanks.