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Marvel’s use of the multiverse concept allows for the replacement of beloved characters with different actors—effectively introducing "variants" of familiar heroes. This tactic provides Marvel with the flexibility to cast new actors in existing roles or create alternate versions without disrupting the narrative continuity. Critics suggest that this is a cost-effective way to refresh the franchise while also embracing diversity, predominantly by promoting female characters and minority heroes.
The multiverse also offers hope to fans who are skeptical of these changes, allowing beloved characters like Tony Stark or Steve Rogers to return in alternate forms or timelines, keeping their legacies alive without requiring the original actors.