Tropes where two characters are paired with each other, whether as friends, lovers, enemies or any other relationship (including but not limited to "X is this to Y").
This index overlaps heavily with Love Tropes, This Index Is Not My Girlfriend, Friendship Tropes, Sibling Tropes, and Foil. Compare Power Trio; contrast Solitary Tropes. Often involves two character types who are each other's Foil.
Twin Tropes is a sub-index.
- Action Duo
- Adventure Duo
- Back-to-Back Badasses
- Badass and Child Duo
- Bash Brothers
- Battle Couple
- Beast and Beauty
- Best Friend
- Betty and Veronica
- Big Bad Duumvirate
- Big Guy, Little Guy
- Bifauxnen and Lad-ette
- Black Best Friend
- Blind and the Beast
- Blood Brothers
- Bodyguarding a Badass
- Boke and Tsukkomi Routine
- A Boy and His X
- Brains and Brawn
- Brooding Boy, Gentle Girl
- Brother-Sister Team
- Bully and Wimp Pairing
- Cain and Abel
- Captain Smooth and Sergeant Rough
- Catch Phrase Spouting Duo
- Chubby Mama, Skinny Papa
- Cloudcuckoolander's Minder
- Cool-Kid-and-Loser Friendship
- Cop and Scientist
- Cynic–Idealist Duo
- The Dividual
- Dual Boss
- Evil Duo
- Fat and Skinny
- Female Flatfoot and Snarky Guy
- Fighting the Lancer
- Fire/Ice Duo
- Foolish Sibling, Responsible Sibling
- Force and Finesse
- Friends with Benefits
- The Gentleman or the Scoundrel
- The Glorious War of Sisterly Rivalry
- Guys Smash, Girls Shoot
- Ham and Deadpan Duo
- Hair-Contrast Duo
- Headbutting Heroes
- Heterosexual Life-Partners
- Hot Guy, Ugly Wife
- Huge Guy, Tiny Girl
- Interclass Friendship
- Intergenerational Friendship
- Just Friends
- Lady and Knight
- Left-Handed Mirror
- Light Feminine and Dark Feminine
- Like Brother and Sister
- Little Guy, Big Buddy
- Lookalike Lovers
- Lover and Beloved
- Maid and Maiden
- Male Might, Female Finesse
- Masculine Girl, Feminine Boy
- Merlin and Nimue
- Messy Male, Fancy Female
- Mister X and Mister Y
- Mistress and Servant Boy
- Muggle Best Friend
- Noble Male, Roguish Male
- Odd Couple
- Odd Friendship
- Old Cop, Young Cop
- The Only One I Trust
- Opposites Attract
- Outlaw Couple
- Parent-Child Team
- Pink Girl, Blue Boy
- Pitbull Dates Puppy
- Platonic Boy/Girl Heroes
- Platonic Life-Partners
- P.O.V. Boy, Poster Girl
- Psychedelic Comedy Bromance
- Red Oni, Blue Oni
- Right Way/Wrong Way Pair
- Rivals Team Up
- Romantic Wingman
- Rookie Male, Experienced Female
- Rude Hero, Nice Sidekick
- Ruling Couple
- Salt and Pepper
- Savvy Guy, Energetic Girl
- Science Foils
- Sensitive Guy and Manly Man
- Short-Range Guy, Long-Range Guy
- Shipping
- Sibling Yin-Yang
- Sickeningly Sweethearts
- Smart Animal, Average Human
- Solar and Lunar
- Soprano and Gravel
- Straight Man and Wise Guy
- Strictly Professional Relationship
- Strong Girl, Smart Guy
- Student and Master Team
- Sword and Sorcerer
- Symbiotic Possession
- Tag Team
- Talker and Doer
- Technician vs. Performer
- They Fight Crime!
- Those Two Animals
- Those Two Guys
- Tiny Guy, Huge Girl
- Tomboy and Girly Girl
- Tragic Bromance
- Translator Buddy
- Two Chicks in a Kitchen
- Two Gamers on a Couch
- Two Guys in a Garage
- Ugly Guy, Hot Wife
- Vagabond Buddies
- Vile Villain, Laughable Lackey
- Vitriolic Best Buds
- Wacky Parent, Serious Child
