Det helt store hook i Watch Dogs: Legion er, at du kan spille som alle karakterer der optræder i spillet, hver af dem har deres eget simulerede liv med planer og en oprindelses historie.
Clint Hocking, der er spillets Creative Director, har sat sig med Gamingbolt og fortalt, hvordan de kom op med ideen til det helt store hook i spillet.
"The play as anyone innovation emerged fairly naturally when we first started to look at the pillars of the Watch Dogs franchise, and at the evolution of the series," fortalte Hocking til GamingBolt. "One of the original promises of the brand was the ability for the player to hack into the lives of any character they see in the world, and learn more about them using the Profiler. For Watch Dogs Legion, we wanted to take the promise of the Profiler further by making everyone in the world live fully simulated lives. At the same time, we also looked at how DedSec evolved over time; from a group working in the shadows with Aiden in the original game, to a collective of hackers in the sequel. We asked ourselves if being able to build your own DedSec made sense, and once that idea lined up with a fully simulated population, the idea that any character could be your next playable hero made complete sense."