Lucas Walker

Lucas Walker was on Mordor at the time of the start of the Guardian Civil War which he didn't know who to follow, Evan or Uriah, so he got the Mordian security forces to join him and he formed the Guardian Alignment and made Mordor its headquarters.

Death
Lucas Walker was killed by a Nakamura Crime Family member on Mordor when a battle for Mordor took place on the surface.

Family
Rachel Walker was Lucas' sister and Rose Walker was his niece. They both mourned his death on the day after.