Because countless seasons and multiple foreign editions can [[LoadsAndLoadsOfCharacters really add up]], ''Big Brother'' will require multiple pages.


[[folder:UK series]]

!!Davina [=McCall=]

* CatchPhrase: "Big Brother house, this is Davina. You are live on Channel 4. Please do not swear!" and " You Have 30 seconds to say your goodbyes. I'm coming to get you!"
* GameshowHost
* TeamMom

!!Brian Dowling

* CampGay
* CatchPhrase: "Big Brother House, this is Brian ... your time has come" and "you've lost your place in the Big Brother House. You have 30 seconds to say your goodbyes."
** Also, when telling the viewers to not vote if they're watching a repeat, "You're just too late!"
* GameshowHost
* OlderAndWiser: Is a former houseguest, and won Ultimate Big Brother before becoming the new host.

!!Emma Willis

* CatchPhrase: "Big Brother House, this is Emma ... The viewers have spoken, your fate is sealed."
* NiceGirl
* TeamMom

!!Marcus Bentley

The narrator, who like Mike Goldman, has been narrator for every series.

* CatchPhrase: "Dyah (x) in the Big Brother house" and "You decide!"
* TheNarrator
* UsefulNotes/BritishAccents: Has a strong Geordie accent.

* [[Characters/BigBrother2007 Big Brother 2007]]
* [[Characters/BigBrother2012 Big Brother 2012]]
* [[Characters/BigBrother2013 Big Brother 2013]]
* [[Characters/BigBrother2014 Big Brother 2014]]
* [[Characters/BigBrother2016 Big Brother 2016]]


[[folder:US series]]

!!Julie Chen

* BerserkButton: ''Don't talk about Season 15.'' She almost went off on a particular contestant that year for leveling racist remarks at Asians.
* CatchPhrase: "But first . . . "
* DeadpanSnarker: Can make a few jokes at a houseguest's expense, all while keeping her professional persona.
* DopeSlap: With her cue cards in Season 3, and rightfully so! She actually gave a well-deserved one to Marcellas Reynolds after he made the king of stupid moves and didn't use the Golden Power of Veto to save himself from the eviction block when he really needed it, who whined, and shouted, ''"What were you thinking!?!"''
* EarlyInstallmentWeirdness: In the first few seasons, Julie hosted the show more akin to a news anchor, and there was no live studio audience. Her voice was also subdued and flat. In later seasons, she has grown comfortable with the role of show host and adds a touch of personality to things.
* GameShowHost: Naturally.
* TheStoic: Is almost always able to hold her own, even when interviewing some of the zanier houseguests. The only people who've been able to make her [[{{Corpsing}} corpse]] are William "Mega" Collins from season 1 (bellowing "YEAH!! YEAH!!" as he entered the house, getting her to break into full laughter- from before she became a well-sharpened stoic), Zach Rance from season 16 upon his eviction (getting up to leave without needing to be told he was evicted), and Johnny Mac from season 17 ("YEA, WHADDYA WANT?").

!!The Zingbot 3000/9000

* CatchPhrase: ZING!
** BorrowedCatchPhrase: Later seasons have houseguests giving their own zingers to each other (or Zingbot himself) in the Diary Room, and always imitate his trademark "ZING!" afterwards.
* CharacterizationMarchesOn: As the seasons have gone by, Zingbot has been shown starting a family, getting married in Season 13, having a child in Season 14, and celebrating his child's first birthday in Season 15, and being single again in Season 17, which upgraded him to 9000. Well, ''motivated'' him to upgrade himself. And as of Season 19, he's the President of his homeworld, Planet Zing... but he may have colluded with President Puntin of Planet Pun.
* DeadpanSnarker
* FlatCharacter: Justified. Zingbot's one purpose is to crack zings at people, nothing more, nothing less. Although he has become President of Planet Zing as of late...
* FunnyBackgroundEvent: During the second eviction of Big Brother 13, the Zingbot is in the audience holding a sign saying, "Comic-con or bust". He actually did attend Comic-con in 2011. Also, during the double eviction of Big Brother 18, Zingbot held a new sign saying "Zingbot for President" a competition that actually happened the next week after Zakiyah and Bridgette were evicted. Although, given that this also coincided with the timing of the 2016 presidential election, one's reaction might become a wee bit uncomfortable... but becomes downright hilarious in hindsight when Zingbot reveals he became president of his home planet in Big Brother 19.
* GiantSpaceFleaFromNowhere: His debut. He just randomly dropped in on the house, snuck into the bedrooms, then began blaring a siren to wake them up (because no one had ever met him yet and thus had no telltale stimulus to properly react to beyond raw noise to wake them up).
* NoIndoorVoice: Zingbot seems to shout every thing he says.
* NotHimself: Coupled with WeWantOurJerkBack- in Season 16, Zingbot was malfunctioning and giving contestants "props" instead of "zings", which necessitated the need for an even ''bigger'' insult comic to show up... Creator/KathyGriffin. She explained Zingbot needed to be rebooted due to a glitch... after which, he returned to his old, zinging self.
* RunningGag: He comes in and insults everyone. Naturally, everyone talks about how good/bad the zings were, and then zings everyone else. Also, Zingbot likes to declare "I'M BAA~~AACK!!!" and show up in the wee hours of the morning and declare, "WAKE UP, EVERYBODY!!!"
* VocalEvolution: In his debut season, Big Brother 12, Zingbot had a robotic monotone. In 13, it became a shrill, echoing, auto-tuned, high-pitched voice. 14 onward, he has a slightly robotic and stilted high-pitched tone of voice.
* [[Characters/BigBrother1 Big Brother 1 (Big Brother 2000)]]
* [[Characters/BigBrother2 Big Brother 2]]
* [[Characters/BigBrother3 Big Brother 3]]
* [[Characters/BigBrother4 Big Brother 4]]
* [[Characters/BigBrother5 Big Brother 5]]
* [[Characters/BigBrother6 Big Brother 6]]
* [[Characters/BigBrotherAllStars Big Brother All-Stars (Big Brother 7)]]
* [[Characters/BigBrother8 Big Brother 8]]
* [[Characters/BigBrother9 Big Brother 9 (Big Brother ♥: 'Til Death Do You Part)]]
* [[Characters/BigBrother10 Big Brother 10]]
* [[Characters/BigBrother11 Big Brother 11]]
* [[Characters/BigBrother12 Big Brother 12]]
* [[Characters/BigBrother13 Big Brother 13]]
* [[Characters/BigBrother14 Big Brother 14]]
* [[Characters/BigBrother15 Big Brother 15]]
* [[Characters/BigBrother16 Big Brother 16]]
* [[Characters/BigBrother17 Big Brother 17]]
* [[Characters/BigBrother18 Big Brother 18]]
* [[Characters/BigBrotherOverTheTop Big Brother: Over the Top]]
* [[Characters/BigBrother19 Big Brother 19]]
* [[Characters/BigBrother20 Big Brother 20]] (Coming June 27, 2018)
!!!Celebrity Big Brother:
* [[Characters/CelebrityBigBrother1US Celebrity Big Brother]]

[[folder: Canada Series]]

!!Arisa Cox

* GameShowHost

!! Peter Brown, Gary Levy & Sarah Hanlon
Co-hosts of the ''Side Show'' with Arisa, and former contestants from season 1 and in Sarah Hanlon's case, 3.

* AccentuateTheNegative: Peter often does this to houseguests after they've been eliminated. Gary, meanwhile, will accentuate the things the houseguest did right.
* CausticCritic
* MeanCharacterNiceActor: Peter can be downright ''nasty'' to some other contestants when talking to them, but he's friends with most of the houseguests outside the show and will usually complement them when they're not around.
* PromotedFanboy: All three of them were in the house in season 1 and in Sarah Hanlon's case, 3, before becoming hosts of the ''Side Show''.
* SensitiveGuyAndManlyMan: Gary's the sensitive guy, Peter's the manly man. While Sarah and Peter have a similar dynamic, one's male and one's female so it doesn't have the same impact.
* TheReasonYouSuckSpeech: Both of them tend to do this in their rants after a contestant does something stupid, and occasionally to their face after they've been eliminated.
* RedOniBlueOni: Red Peter and Blue Gary.
* ReplacementGoldfish: With Gary Levy leaving the show to pursue his new career, Peter got a new partner in Sarah Hanlon, winner of Big Brother Canada 3.
* TheRunnerUpTakesItAll: They're some of the most well-known contestants from ''Big Brother Canada'', even though Gary was just runner-up and Peter finished in sixth-place. Subverted with Sarah Hanlon who won BB Canada 3.

!!Marsha The Moose

* {{Camp}}
* AmplifiedAnimalAptitude
* MissionControl: Gives secret assignments to the houseguests she speaks to.

* [[Characters/BigBrother1Canada Big Brother 1]]
* [[Characters/BigBrother2Canada Big Brother 2]]
* [[Characters/BigBrother3Canada Big Brother 3]]
* [[Characters/BigBrother4Canada Big Brother 4]]
* [[Characters/BigBrother5Canada Big Brother 5]]
* [[Characters/BigBrother6Canada Big Brother 6]]

[[folder:OZ series]]

!!Gretel Killeen
The original and most well known host of the Australian series.

Follow on Twitter [[ here.]]

* GameshowHost
* MetaphorIsMyMiddleName

!! Sonia Kruger
The host for the 2012 Channel 9 revival of the show.

Follow on Twitter [[ here.]]

* GameshowHost

!! Mike Goldman
The narrator for the series who has been in every season including the revival.

Follow on Twitter [[ here.]]

* TheNarrator

! Surly

The house's pet fish who can secretly talk and give out challenges to any housemate he wants.

Follow on Twitter [[ here.]]

* UsefulNotes/BritishAccents: Has a bit of a Cockney accent.
* DeadpanSnarker
* TheOtherDarrin: The show is on its fifth or sixth puffer fish. Justified, due to the fact they are wild and are caught in the ocean. They are not used to the lights, but rather require darkness resulting in sickness or death.

* [[Characters/BigBrotherAU2008 Big Brother 2008]]
* [[Characters/BigBrotherAU2012 Big Brother 2012]]
* [[Characters/BigBrotherAU2013 Big Brother 2013]]