How have the representation of diverse characters and storylines evolved in both Marvel and DC Comics over the past few decades?

Both Marvel and DC have made strides in improving representation, though progress has been uneven. Initially, both universes lacked diversity, featuring predominantly white, male characters. In recent decades, there's been a conscious effort to introduce more diverse characters in terms of race, ethnicity, gender identity, and sexual orientation. Storylines have also become more inclusive, addressing social issues and exploring different perspectives. While challenges remain, both companies are actively working to create more representative and relatable narratives.