There are many elements of Avengers: Infinity War that are taken straight from the pages of Marvel Comics, but one big change made by the film is in regards to Thanos' motivation. While the movie has him wanting to kill half of living entities in hopes of balancing the universe, the source material has him trying to win the love of Mistress Death (a physical manifestation). Fans speculated for years about this obsessive love being a part of the movie, but recently directors Joe and Anthony Russo explained to me why she was never really involved. Said Joe Russo,
Prior to the release of Avengers: Infinity War, I had the chance to sit down with the Russos at the Los Angeles press day for the Marvel Studios film, and it was during our conversation that I inquired about Mistress Death (a.k.a. simply Death). Confirming that she wasn't in the blockbuster, Joe Russo first explained that there simply wasn't the room necessary in the film to include a brand new character who is that significant. Instead, the focus was kept primarily on the heroes and villains we know, and that allowed them to better navigate the story.
It's worth mentioning that the film does include a few new characters, including the four members of the Black Order -- but it's true that it also doesn't spend a ton of time explaining who they are (something that would be necessary for the introduction of Death, given her aforementioned role in Thanos' motivations). Instead, as suggested, Avengers: Infinity War builds on pre-existing real estate to provide deeper emotional connections for the Mad Titan as a character, and puts much more focus on the Children of Thanos we already know because of the Guardians of the Galaxy movies. Following up what his brother had to say, Anthony Russo told me,
To provide a bit more background, in the comics Thanos is in love with Death, and because living souls have grown to outnumber the dead, it is actually her desire to see half of life in the universe killed. Regularly shunned by Death, who isn't even willing to speak to him, Thanos realizes he can help her complete her goal by collecting all of the Infinity Stones in the Infinity Gauntlet. In a twist of irony, however, doing so and becoming a god leads Death to see Thanos as her superior, and she is left still unwilling to speak to him (which leads the Mad Titan down a path of petulance and toxic masculinity). With so much else going on in Avengers: Infinity War, this would have been a sincere challenge to directly adapt, and the version on screen is not only a well-streamlined take on the narrative, but arguably a more effective one.
Joe Russo returned to the subject of emotional connection to the characters later in the interview, and used it to make an interesting point about a defined pattern in their Marvel movies. As he explained, all of their antagonists have strong connections to the heroes, because that's what makes the material rich:
After years of waiting, fans can now experience Avengers: Infinity War for themselves, as it is in theaters just about everywhere (and establishing itself as one of the biggest blockbusters of all time). Stay tuned here on CinemaBlend for a whole lot more of our Marvel coverage, and take a look at our 2018 release schedule to see what's ahead!