Hulu’s Runaways faced a rare challenge for a superhero show. While fans might have favorite stories and characters they wanted to see in any onscreen story about Daredevil, Flash, or the Teen Titans, there are so many versions of those heroes that there isn’t a clear agreed-upon storyline writers would be expected to follow. That isn’t true for Runaways. While Marvel rebooted the comics series this year, for most readers, it was defined by Brian K. Vaughan and Adrian Alphona’s original run, which introduced the characters in 2003. When Hulu began adapting the series, showrunners Josh Schwartz and Stephanie Savage faced the question of how to make the most of the existing material, but their attempts to weave together established content...