Die Another Day (2002)
In one of the James Bond movies, his antagonist, the North Korean spy Tan-Sun Moon, alters his appearance through a change of DNA and turns into a person that looks completely different. In reality, this is impossible and such manipulations with bone marrow are very dangerous. Why didn’t he just go to a cosmetic surgeon?
As to Hagrid's parents, love will find a way, especially if one of them is a wizard.
BTW, I had a Korean friend who was incensed beyond measure that all the North Korean characters spoke with _South_ Korean accents in 'Die Another Day' — and even more by the villain's dad, who had a Cantonese accent.