Alliance

An alliance is a duo or group that are loyal to each other in Big Brother. These groups can prove to be very dominative and can seize control in a game if they manage to get a majority. Many times, members of an alliance will "defect" in order to increase their placings or if they feel betrayed by members of an alliance.

Big Brother 2

 * Chilltown
 * TOP ("The Other People")

Big Brother 3

 * Chiara Jude Berti & Roddy Mancuso, Eric Ouellette & Lisa Donahue
 * Danielle Reyes & Jason Guy

Big Brother 4

 * Elite Eight
 * Girl Power
 * Three Stooges

Big Brother 5

 * Four Horsemen
 * Pinky Swear Alliance

Big Brother 6

 * The Friendship
 * Sovereign Six

Big Brother 7

 * Chilltown
 * Sovereign Six (aka season six alliance)
 * The Legion of Doom

Big Brother 8

 * Mrs. Robinson Alliance
 * Late Night Crew

Big Brother 9

 * Team Christ
 * Team Pink / The Evil Doers (What Natalie called them)

Big Brother 10

 * The Renegades
 * The Coven

Big Brother 12

 * The Brigade

Big Brother 13

 * Newbies
 * The Regulators
 * Veterans

Big Brother 14

 * Chilltown 2.0
 * Silent Six
 * Team Touché
 * The Quack Pack

Big Brother 15

 * The Blonde-Tourage
 * The Moving Company
 * The Mom Squad
 * The Goof Troupe
 * Tenexas
 * Young Grasshoppers
 * 3 A.M.
 * Unnamed Alliance
 * Exterminators

Big Brother 16

 * The Bomb Squad
 * The Double D's
 * The Crazy 8's
 * El Cuatro
 * Team America
 * The Detonators
 * Los Tres Amigos
 * The Rationale
 * The Hitmen
 * The Weirdos
 * Zankie

Big Brother 17

 * Austin's Angels
 * Clelli
 * Jecky
 * Liztin
 * Rockstars
 * Scamper Squad
 * ShellTown
 * Students of Sound
 * Team JJ
 * The Goblins
 * Three's Company