The offspring of agents (usually Scully or Reyes) come in matched sets in these fics.
Twins
Baby Plans by Kristen
Babysitting by Tabby
Being Young series by Jo Ann Medrano (preXF Maggie Scully - Bill jr. and Missy are twins)
A Challenging Life by Billie Reid (Kim/Skinner)
Christmas in (Haven) Maine by Neoxphile and Faerax
Christmas Time is Here Again by hellogoodbye57
The Climb by Starbuck2824
Could've Been by RogueAngel
Daddy's Girl by Starrlyte
Deliverance From Evil chapters 1-10
chapters 11-20
chapters 21-30
chapters 31-40
epilogue by Jacquie LaVa and Tess
The Discovery Series by Erin Blair
Ersatz Matriarch by Jeri
Family I - The Beginning by Kelly Mullins
Family II by Kelly Mullins
Family III - Changes by Kelly Mullins
The Family G-Man by Neoxphile & FelineFemme
The Family G-Man: One Fine Summer by FelineFemme and Neoxphile WIP
Final
Truths by Lexy Torell & Psi Fi (Krycek/Samantha)
Five Years by xfilesjunkie
Flight into Egypt by Vickie Moseley
Folded Like A Saint by kim1013
For the Good of the Child by Aislinn Carter
Great
Expectations by bellefleur & Emily Sims
Happy Birthday, Baby Boy by Squishy
I Know What You Did... by Henle Girl
I Shall Believe by Cathey Scully
Inherently Given part one part two part three by Michelle Hiley and Vickie Moseley
Innocents by Peach (slash)
Iolokus V. Syadilohby Mystic
It Just Happened by Mystic
It's Only Ever Been You by kimo-sabe
Joy Begets Sorrow by Parrotfish
Joyful are the Waterdrops by kim1013
Labor
Day by Billie R
The Life They Now Lead by Lilxgirl (aka Abigail)
The Lullaby series by Donnilee
Miracle Season by Neoxphile
Mirror of Love by Tanja
My Family
by Spookster
Nothing's Ever Normal by hellogoodbye57
Origins by Mischa
Our Sweetest Songs by Jamie Taylor
Places That Scare You by Rose Campion
Part One Part Two Part Three(m/m slash Mpreg)
Possibilities by Jennifer Sweeney
The Present Implies Presence by kim1013
Promises to Keep by Prufrock's Love
Recovering Gemini
by Neoxphile
A Sleepy Little Town: Memory House by Neoxphile
A Sleepy Little Town: Free Fall by Neoxphile WIP
Sweet Dreams Series by Alice J. Foster
This Fragile Universe by Neoxphile *wip*
The Time For Miracles by Carol Gritton
Truckin' II: Keep On Truckin' by Donnilee and Fatcat
The Truth is Not Enough Part 2: Children by dana-maru1
The Truth Is Not Enough Part 3: William by dana-maru1
The Truth is Out There by Lolabeegood
Twins by Teetee
An Unexpected Delivery by Colleen
Wassail - an X-Files Christmas story by Julie L. Jekel
Whatever We Become(Seed II) by Cathey Scully
Where the Heart Lies by hellogoodbye57
Without You by Jennis524
Womb For Revenge by Neoxphile (Mpreg but het)
The X-Files Chronicles by Madame F
The Last Deception by Susannah
Great Men Universe: The Beginning by The Phile Formerly Known as Soapie
I Know What You Did... by Henle Girl
Triplets
And Baby Makes Four by gillian dana
And Baby Makes Four Returns For Halloween! by gillian dana
Baby Mine by Debbie Gramlich
Beyond The Truth by Neoxphile (Doggett/Reyes offspring)
Five Years by xfilesjunkie
Happy Birthday Mulder Triplets! by gillian dana
I Should Have Known by ElleThom
Retam Sullet by OneMillionAndNine
Who Knew? by ElleThom
Quads
Birthday Week (Miracle Season sequel) by Neoxphile
Chrysanthemum
by Alethea Lynn
The Family G-Man: One Fine Summer by FelineFemme and Neoxphile WIP (Bill jr's)
Four is a Wonderful Number by Leki Harris
Miracle Season by Neoxphile
Mulder and The Quads by Leki Harris
Mulder's Sperm by Mellissa
Mulder's
Sperm + Ubereggs = Little Pink Babies by Mellissa
Quints or more
Baby, Oh Baby! by Cassie Consten
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