Unlike the first two entries with a fully-developed protagonist, Watch Dogs Legion shakes things up by not having a main character. Players will not be controlling a super hacker like Aiden Pearce or Marcus Holloway but instead the focus will be on DedSec as a collective anyone can join to fight the oppressive police state.
Source: N4G PC E3 2019: Watch Dogs Has DedSec Saying We Are Legion – Hardcore Gamer