The director, who took to his Facebook page on International Day of the Girl, lamented the trope of the sole strong female character in movies.
"I am sick of stories where there are a bunch of fully realized male characters and one female character, whose primary characteristic is simply being 'the girl' or the personality-less object of some man's affections. I'm not sick of this because I'm politically correct - those of you who know me know I am far from that - but because it's boring.
"Guardians of the Galaxy Vol. 2," will see Chris Pratt, Zoe Saldana, Karen Gillan, Dave Bautista, returning to reprise their roles.
The movie is set to theaters on May 5, 2017.