The Marvel Comic Universe is one of the most successful film franchises of all time. With 22 movies under its belt and a bunch of box office records, it has cemented itself as the cream of the crop. Naturally, the MCU can afford to hire some of the best writers in Hollywood, but some of the most memorable moments and lines were actually improvised by the cast.
With A-list actors like Robert Downey Jr. and Benedict Cumberbatch, Marvel never had a problem letting the actors have free reign and it definitely paid off in the end.
See which line RDJ ad-libbed that ended up totally changing the course of the Marvel movies.
Dave Bautista Made Up The "Why Is Gamora" Line
Drax the Destroyer is meant to be a strong but relatively dim-witted character who takes himself way too seriously, AKA the perfect role for wrestler Dave Bautista. One of Drax's best lines from the MCU came from Avengers: Infinity War when he adds the line "I'll do you one better! Why is Gamora?"
The script was supposed to end with Robert Downey Jr.'s line "Who is Gamora?" but Bautista embodied Drax and added it in. After the improvisation, the film's screenwriter told Bautista "Okay, you're very good at your job."