Aspect Warriors are the elites of the Aeldari army. We’ve seen some of the Dark Reapers and their leader Maugan Ra, but that’s just one of the numerous groups that exist. We get a much more general look of how these warriors are getting updated in the new Aeldari codex, coming soon.
From the article:
The Phoenix Lords have been doing some serious strength training for the upcoming Codex: Aeldari – just check out Maugan Ra’s terrifying new rules – but they haven’t left their Aspect Warrior followers behind. Not only do the Phoenix Lords support their archetypal disciples with potent inspirational auras, these champions of the craftworlds are simply stronger and tougher across the board.