Defender Sibley

Defender Sibley is a member of the Brotherhood of Steel Outcasts located at the Outcast outpost in Bailey's Crossroads, in Fallout 3.

Appearances
Defender Sibley appears in the Fallout 3 add-on Operation: Anchorage.

Behind the scenes
Outcast members Morrill, Olin, McGraw and Sibley, share their names with several buildings found on the campus of Cornell University, namely Sibley Hall, Olin Hall, Olin Library, McGraw Hall, McGraw Tower and Morrill Hall.