User blog comment:Master Sima Yi/Assassinews 12-05-'15 — Assassin's Creed: Syndicate has been revealed!/@comment-4786308-20150704151455/@comment-26314858-20150705111606

now that you mention it, its true. maybe they just need something driving them like vengeance for Ezio, Arno, and Shao Jun. The only Assassins in the main games who got their family still alive when they joined the Brotherhood is Edward and Desmond. IDK about the Frye twins but their mother isn't mentioned so far so I think they're one of the "No parents Club".