what song do you think can fit every character in the show?

Ok if I understand well your question (pretty cool, by the way)

I Will think this

ALEJANDRO: "Alejandro" of Lady GaGa (Duh pretty obvious Isn't it?)

BETH: I Don't know maybe "WANABEE" of the Spice Girls (she is labeled the wanabee by the way)

BLAINELEY: I Can't think of any song for her, so maybe I will go with the song of the show about her "Her real name isn't Blaineley" or "Blainerific"

BRIDGETTE: "Surfing USA" of Beach Boys(She is the surfer chick)

CHEF: Sorry I can't think of any song for him

CHRIS: Maybe "Poor Unfortunate Souls" of "The Little Mermaid" (I Can see him singing that to the characters.

CODY: "Almost" of Bowling for Soup (I Think that can fit him)

COURTNEY: "Bad Boy" of Cascada (or at least that song used to fit her for her crush on Duncan)

DJ: Maybe "I Gotta Feeling" of Black Eyed Peas (well he is an optimist person, I can really see him singing (or at least saying) "I gotta a feeling that today is gonna be a great day"

DUNCAN: "Bad To The Bone" of ZZ Top or maybe "Smells Like Teen Spirit" by Nirvana

EVA: Sorry I can't thing in a song for her

EZEKIEL: I Thing that "Canadian Idiot" of Weird Al Yankovic fit him

GEOFF: Well for him I see "Start the Party" of Camp Rock or you are right "Party Like A Rockstar" of Shop Boys also fit him

GWEN: "Bring Me To Life" Of Evanencense (I think of that for Gwen but I can't explain why)

HAROLD: For him is a easy choice "White and Nerdy" of Weird Al Yankovic

HEATHER: Maybe "Sexy Bitch" of David Guetta and Akon or I don't know "Fabolous" of HSM2

IZZY: "Extraordinary" of Liz Phair without a doubt

JUSTIN: "I'm to Sexy For My Shirt" of Right Said Fred

KATIE AND SADIE: For them I think that "Best Friend" of Toy-Box is a very good choice

LESHAWNA: I Couldn't think of a song for her.

LINDSAY: Well for her I think that "Barbie Girl" of AQUA fit her perfectly

NOAH: Sorry I have no song for him

OWEN: For him the song "Fat" of Weird Al Yankovik (if pretty obvious that I like that group isn't it?, I mean thats the third song of them that I put for a Total Drama Character) Anyway another song that can fit Owen is "Do You Like Waffles?" of Parry Grip.

SIERRA: "Paparazzi" Of Lady GaGa (That fit her relationship with Cody, "I'm your biggest fan I follow you until you love me" that part of the lyric say it all

TRENT: Another character that even for much that I try I can't find a song that fits him

TYLER: "All Star" of Smash Mouth is perfect for him.

well anyway those are the songs that I think can fit the characters of the serie

ALEJANDRO: Womanizer (Britney Spears)

BETH: Maybe This Time (Glee) ( link )

BLAINELEY: Fabulous (Ashley Tisdale & Co.)

BRIDGETTE: No Ordinary Girl (H20: Just Add Water)

CHEF: Are You In or Out (Aladdin and the King of Thieves) (I can see him singing this to the cast to turn them against Chris.)

CHRIS: Welcome to the Forty Thieves (Aladdin and the King of Thieves) (I can see him as Cassim singing to Aladdin, who would be played by Duncan.)

CODY: ?

COURTNEY: Lil Miss Swaggar (Cymphonique)

DJ: ?

DUNCAN: Good Girls Go Bad (Cobra Starship)

EVA: ?

EZEKIEL: Canadian Idiot (Weird Al Yankovic)

GEOFF: Start the Party (Camp Rock)

GWEN: I Didn't Steal Your Boyfriend (Ashlee Simpson)

HAROLD: White and Nerdy (Weird Al Yankovic)

HEATHER: Sexy, Naughty, Bitchy (Tata Young), and Too Cool (Camp Rock)

IZZY: Real Wild Child (Everlife)

JUSTIN: I'm to Sexy For My Shirt (Right Said Fred)

KATIE AND SADIE: True Friend (Hannah Montana)

LESHAWNA: Single Ladies (Beyonce)

LINDSAY: Whatever this song is: link

NOAH: ?

OWEN: ?

SIERRA: Paparazzi (Lady GaGa)

TRENT: Crush (David Archuleta)

TYLER: ?