Backyard Sports/Characters

Ace Patterson

 * In-Series Nickname: "Acer."

Achmed Khan

 * Air Guitar: Plays air (baseball bat) guitar for his up-to-bat ritual in the first two Baseball games, and plays it during the intro of Baseball 2007 onward.
 * Boisterous Bruiser
 * Dreadful Musician: Is depicted as such in the earlier games.
 * Headphones Equal Isolation: Pretty much.
 * In-Series Nickname: "Axeman."
 * Metalhead
 * The Power of Rock

Amir Khan

 * Air Guitar: He has the same up-to-bat ritual as Achmed. Though he trips over his bat in the process.
 * Big Brother Worship
 * Chuck Cunningham Syndrome
 * Commuting on a Bus: In Baseball 2007.
 * In-Series Nickname: "Sticks."

Angela Delvecchio

 * Brainy Brunette: She's supposedly better at school than sports.
 * Cain and Abel: With Tony.
 * Cute Bruiser
 * In-Series Nickname: "Sugar Pop."
 * Moe Moe: In spades.

Annie Frazier

 * Everything's Better with Rainbows: Had a rainbow on her shirt until the switch to 3D.
 * Granola Girl: Wears 100% Natural Organic Materials and was concerned about the cows being used for the leather for football until her mother told her it was simulated leather.
 * Hair of Gold
 * In-Series Nickname: "Flipper."

Arthur Chen

 * Chuck Cunningham Syndrome
 * Cousin Oliver
 * Otaku

Ashley Webber

 * Divergent Character Evolution: She and Sidney look less alike in the more recent games.
 * In-Series Nickname: "Little Smokey" and "Ash."
 * Single-Minded Twins: With Sidney.
 * Spoiled Sweet

Billy Jean Blackwood

 * Chuck Cunningham Syndrome
 * The Fashionista: She thinks that of herself.
 * In-Series Nickname: "Crazy Legs."

Dante Robinson

 * Big Eater: It's his power-up to have a game at a field where there would be food.
 * Funny Afro
 * In-Series Nickname: "Stretch."

Dmitri Petrovich

 * Blind Without'Em
 * Fourth Wall Observer: When clicking on him, he may make a comment about the game's artificial intelligence.
 * In-Series Nickname: "Paste" and "Petri-dish."
 * Nerd Glasses
 * Nerd

Ernie Steele

 * In-Series Nickname: "Funnybones."
 * Knock-Knock Joke: Loves cracking these.
 * Noodle People: He's very tall and skinny. He even Lampshades this: one of his jokes that he cracks in Football is that his legs and arms are like spaghetti.

Gretchen Hasslehoff

 * Chuck Cunningham Syndrome
 * Commuting on a Bus: In Baseball 2007.
 * Germans Love David Hasselhoff: While there isn't proof that she has a fanbase in a foreign country, she does discuss this trope's name origin in the Football games.
 * In-Series Nickname: "Jabberjaw."
 * Motor Mouth

Jimmy Knuckles

 * In-Series Nickname: "The Bully."

Jocinda Smith

 * Black Best Friend: To Kimmy.
 * Chuck Cunningham Syndrome
 * In-Series Nickname: "MVP."
 * Sesquipedalian Smith

Joey MacAdoo

 * Cousin Oliver
 * In-Series Nickname: "Broadway Joey."
 * The Scrappy / Creator's Pet
 * This Loser Is You: One of the few white kids in the series, he sucks big time.

Jorge Garcia

 * Blind Without'Em: In the early games.
 * Emo Teen: In the later games.
 * In-Series Nickname: "Bonkers" and "Jorge."
 * Neat Freak: So much that it hinders his ability to play sports.
 * Overly Long Name: His full name is Jorge Luis Raoul Garcia the Third.
 * Sharp-Dressed Man: Always wears an expensive play-suit when playing games.
 * Spoiled Brat: He thinks he is better than everyone because he has money.
 * Tall, Dark and Snarky

Kenny Kawaguchi

 * Chuck Cunningham Syndrome
 * Handicapped Badass: Plays sports in a wheelchair.
 * In-Series Nickname: "K-man."
 * Inspirationally Disadvantaged

Keisha Phillips

 * Ambiguously Brown
 * In-Series Nickname: "Flash."
 * Stout Strength
 * Tomboy and Girly Girl: With Maria.

Kimmy Eckman

 * Chuck Cunningham Syndrome
 * Fiery Redhead
 * In-Series Nickname: "Twinkie Toes."
 * Sweet Tooth

Lisa Crockett

 * Badass Bookworm: There's a reason they call her "Mad Dog."
 * In-Series Nickname: "Mad Dog."
 * Meganekko
 * Whatever: Her Catch Phrase.

Luanne Lui

 * Chuck Cunningham Syndrome
 * Companion Cube: Her teddy bear.
 * Fragile Speedster
 * In-Series Nickname: "Lulu."

Maria Luna

 * All Girls Like Ponies
 * Girlish Pigtails
 * In-Series Nickname: "Pinky."
 * Tomboy and Girly Girl: With Kiesha in the later games.

Marky Dubois

 * Companion Cube: A frog named Frog.
 * Does Not Like Shoes: He wears work boots in the later games, though.
 * Dogged Nice Guy: Has a crush on Billy Jean.
 * In-Series Nickname: "Cootie."

Mikey Thomas

 * Chuck Cunningham Syndrome
 * Cloudcuckoolander
 * Imaginary Friend: He has several.
 * In-Series Nickname: "Nugget."
 * The Woobie

Pablo Sanchez

 * Bilingual Bonus: That's actual Spanish he's speaking.
 * Gratuitous Spanish: He switches between Spanish and English in the Game Cube version of Football.
 * In-Series Nickname: "Secret Weapon."
 * Pint-Sized Powerhouse

Pete Wheeler

 * The Ditz
 * In-Series Nickname: "Wheelie."
 * Super Speed

Reese Worthington

 * Author Appeal: He can play the Star Wars theme on a piano. Ron Gilbert, the co-founder of Humongous Entertainment, produced games for LucasFilm Games/LucasArts.
 * Butt Monkey: Even Dmitri insults him!
 * In-Series Nickname: "Big Toe."
 * Lovable Nerd
 * Shorter Means Smarter
 * Suspiciously Specific Denial: He is totally not a nerd.

Ricky Johnson

 * In-Series Nickname: "Fella."
 * Shrinking Violet

Ronny Dobbs

 * Chuck Cunningham Syndrome
 * In-Series Nickname: "Spud."

Sally Dobbs

 * Chuck Cunningham Syndrome
 * In-Series Nickname: "The Boss."

Samantha Pierce

 * Chuck Cunningham Syndrome
 * Cousin Oliver
 * Darkskinned Blonde: While she isn't literally black, she's dark-skinned enough, and certainly blonde.
 * Girl Next Door: Modeled after this archetype.
 * Hair of Gold
 * Youthful Freckles

Sidney Webber

 * Divergent Character Evolution: She and Ashley look less alike in the more recent games.
 * In-Series Nickname: "Little Smokey" and "Sid."
 * Single-Minded Twins: With Ashley.
 * Spoiled Sweet

Stephanie Morgan

 * Chuck Cunningham Syndrome
 * Commuting on a Bus: In Baseball 2007.
 * In-Series Nickname: "Bubbles."
 * The Mario: With generally above average stats in most games, she can essentially play any infield position to moderate effectiveness, though she really excels at shortstop and goalie.
 * Motor Mouth: Not as much as Gretchen, but still noticeable.

Tony Delvecchio

 * In-Series Nickname: "Vec."
 * Shout-Out: His Leitmotif is a Suspiciously Similar Song version of Greased Lightning

Vicki Kawaguchi

 * In-Series Nickname: "Swan."
 * Otaku: In the later games.

Albert Pujols

 * In-Series Nickname: "Phat Albert."

Alfonso Soriano

 * In-Series Nickname: "Sor1."

Babe Ruth

 * Secret Character

David Ortiz

 * In-Series Nickname: "Big Papi."

Derek Jeter

 * In-Series Nickname: "Jetes."

Frank Thomas

 * Truth in Television: His nickname really is "The Big Hurt".

Ichiro

 * In-Series Nickname: "Ich1."

Mike Piazza

 * In-Series Nickname: "Supreme."
 * Never Heard That One Before: Quotes the trope name in reference to all the times he's been called "Mike Pizza".

Randy Johnson

 * Truth in Television: His nickname really is "The Big Unit".

Kobe Bryant

 * Dummied Out: Due to his sexual assault incident. It's easy to re-add him, but using him on a team will crash the game.

Lisa Leslie

 * The Smurfette Principle: She's the only female basketball pro to appear in the game.

Bill Gramatica

 * As Himself: In NFL Backyard Basics.

Brett Favre

 * Book Ends: One of his "Meet the Players" stories involves him feeding cookies to an alligator. His ending photo depicts him feeding a cookie to a plush alligator.

Cade McNown

 * In-Series Nickname: "Downtown".

Donovan McNabb

 * As Himself: In NFL Backyard Basics.
 * In-Series Nickname: "Juke."

Jeff Garcia

 * In-Series Nickname: "Red."

Jerry Rice

 * In-Series Nickname: "Mr. Automatic."

Marcellus Wiley

 * As Himself: In NFL Backyard Basics.

Martin Gramatica

 * As Himself: In NFL Backyard Basics.

Michael Vick

 * In-Series Nickname: "Ookie."

Peyton Manning

 * In-Series Nickname: "Perfect Peyton."

Reggie Bush

 * In-Series Nickname: "The Prezident."

Rich Gannon

 * In-Series Nickname: "The Cannon."

Terrell Davis

 * As Himself: In NFL Backyard Basics.

Tom Brady

 * In-Series Nickname: "Tommy."

Tony Gonzalez

 * As Himself: In NFL Backyard Basics.

Mike Modano

 * In-Series Nickname: "Mo'."

Steve Yzerman

 * In-Series Nickname: "Stevie Y."

Bobby Convey

 * In-Series Nickname: "Bobby."

Brandi Chastain

 * In-Series Nickname: "Holly Wood."

Brian McBride

 * In-Series Nickname: "Bake."

Briana Scurry

 * In-Series Nickname: "Bri."

Carlos Valderrama

 * In-Series Nickname: "El Pibe."
 * Shout-Out: His favorite show (in the games, at least.) is Blue's Clues.

Chris Armas

 * In-Series Nickname: "Eliminator."

Clint Mathis

 * In-Series Nickname: "Cleetus."

Cobi Jones

 * In-Series Nickname: "CJ."

Jason Kreis

 * In-Series Nickname: "Doc."

Jay Heaps

 * In-Series Nickname: "Heapers."

Landon Donovan

 * In-Series Nickname: "Landlova."

Mamadou Diallo

 * Darkskinned Blonde
 * In-Series Nickname: "Big Mama."

Pablo Mastroeni

 * In-Series Nickname: "Pabs."

Preki

 * Only Known by Their Nickname: His actual name is Predrag Radosavljević.

Tiffeny Milbrett

 * In-Series Nickname: "Millie."

Tony Meola

 * In-Series Nickname: "Meatball."

Abner Doubleplay

 * Punny Name: On Abner Doubleday and "double play."
 * Secret Character

Barry DeJay

 * Mutually Exclusive Powerups: In Basketball, you can't use him and Thor Herring at the same time.
 * Purposefully Overpowered: Has full stats for everything in Basketball, just like Thor Herring.
 * Punny Name: On "Bury the J."
 * Secret Character

Buddy Cheque

 * Punny Name: On "body check."
 * Secret Character

Chuck Downfield

 * Butt Monkey: In NFL Backyard Basics.
 * Too Dumb to Live: According to Sunny, he's sacked himself twice, among other things.

The Commentator

 * No Name Given

Earl Gray

 * Meaningful Name: He likes tea.
 * Punny Name: On "earl grey."

Erik Stream

 * Punny Name: On "air extreme."

Sunny Day

 * Mad Libs Dialogue: Except in NFL Backyard Basics.
 * Punny Name: Not only on "sunny day", but Humongous' co-founder Shelley Day as well.
 * Stealth Pun: See above.

Taylor Quilty

 * As Himself: In NFL Backyard Basics.

Vinnie the Gooch
"Sunny: Say hello, Vinnie! Vinnie: Hello, Vinnie! (Sunny stares at Vinnie blankly)"
 * Literal-Minded: This exchange:

Aunt Edna

 * Canon Foreigner

Beverly Backstop

 * Secret Character

Billy

 * Canon Foreigner
 * Intergenerational Friendship: With Bubba.
 * Two Gamers on a Couch: With Bubba.

Billy's Mom

 * Canon Foreigner
 * No Name Given
 * The Voice

Bubba

 * Canon Foreigner
 * Intergenerational Friendship: With Billy.
 * Two Gamers on a Couch: With Billy.

Budget Rent a Mule

 * Canon Foreigner
 * Fartillery
 * Gasshole
 * Sapient Steed

Coach

 * Canon Foreigner
 * Everyone Calls Him "Barkeep"
 * No Name Given
 * The Voice

Custom Kid

 * Character Customization
 * Character Development/Divergent Character Evolution: In some games, custom kids can have different personalities.
 * In-Series Nickname: "Spaz" and others.
 * Magikarp Power: In some games, they have less powerful stats, but get better throughout the season.

Dobbaguchi Arena Mother

 * The Voice: Heard calling for dinner in Basketball.

Eric Lebeaux

 * Ascended Extra: Despite not being playable in Football, he's playable in the Football Demo.

Esther French

 * Ascended Extra: Despite not being playable in Football, she's playable in the Football Demo.

Harold

 * Canon Foreigner
 * Standard Fifties Father

Leah Wayne

 * Ascended Extra: Despite not being playable in Football, she's playable in the Football Demo.

Mr. Clanky

 * In-Series Nickname: "Automatic."
 * Mid-Season Upgrade: Originally, he was made out of scrap parts. Ever since the Game Cube version of Football, he's been rebuilt and now looks professionally made.
 * Robot Names
 * Secret Character
 * Talking Lightbulb

Mummy

 * Canon Foreigner
 * Drives Like Crazy
 * Mummy
 * No Name Given

New Kid

 * The Faceless
 * Featureless Protagonist

Sport

 * Canon Foreigner
 * Only Known by Their Nickname

Thor Herring

 * Braids of Barbarism: In Basketball. Averted in Hockey, where he has a mullet.
 * Embarrassing Nickname: He's called "Lemon Boy" by his foes, possibly referencing his oval-shaped head and blonde hair.
 * Master of Disguise: According to his profile in Basketball.
 * Mutually Exclusive Powerups: In Basketball, you can't use him and Barry DeJay at the same time.
 * Purposefully Overpowered: Has full stats for everything in Basketball, just like Barry DeJay. His stats are also full in Hockey.
 * Secret Character

Worker Drone -45

 * Amazing Technicolor Population: Its skin is pink.
 * Dummied Out
 * In-Series Nickname: "kid 0."
 * The Missingno: Using it requires you to bypass the player selection screen.
 * Spell My Name with an "S": In Soccer 2004's season debugger screen, it's listed as Worker Drone E45.
 * Vocal Dissonance: In Soccer 2004's team photo screen, it has the appearance of Mr. Clanky, but the voice (and lines) of Amir Khan.