A/N: This is basically the canon children of these people in this book, the MCU or comics. I will only only be using children from Earth-616 (the main Earth/our Earth in the comics) and Earth-199999 (Marvel Cinematic Universe)

Tony Stark (Iron Man): None

Steve Rogers (Captain America): None

Bruce Banner (Hulk): None

Clint Barton (Hawkeye): Cooper Barton, Lila Barton and Nathaniel Pietro Barton (adoptive brothers and sister)

Thor Odinson: None

Pietro Maximoff (Quicksilver): Luna Maximoff (adoptive sister)

Natasha Romanoff (Black Widow): None

Wanda Maximoff (Scarlet Witch): William "Billy" Kaplan (Maximoff) a.k.a Wiccan and Thomas "Tommy" Shepard (Maximoff) a.k.a Speed (adoptive brothers)

Helen Cho: Amadeus Cho (adoptive brother)

Wade Wilson (Deadpool): None

James Howlett\Logan (Wolverine): Akihiro Howlett a.k.a Daken and Laura Kinney a.k.a X-23 (adoptive brother and sister)

Scott Summers (Cyclops): Nathan Summers a.k.a Cable (adoptive brother)

Alexander Summers (Havok): None

Jean Grey: None (Cable isn't hers)

Ororo Munroe (Storm): None

Peter Parker (Spider-Man): None

Susan Storm (Invisible Woman): Franklin Richards and Valeria Richards (adoptive brother and sister)

Reed Richards (Mr.Fantastic): Franklin Richards and Valeria Richards (adoptive brother and sister)

Jonathan Storm (Human Torch): None

Loki Laufeyson: A lot (adoptive brothers and sisters)

Darren Cross (Yellowjacket): Augustine Cross (adoptive brother)

Scott Lang (Ant-Man): Cassandra "Cassie" Lang a.k.a Stinger (adoptive sister)

Erik Lehnsherr/Max Eisenhardt : Anya Eisenhardt (deceased), Lorna Dane a.k.a Polaris (adoptive sisters)

Raven Darkhölme (Mystique): Grayson Creed (deceased), Kurt Wagner a.k.a Nightcrawler and Gloria Brickman (adoptive brothers and sister) Anna Marie a.k.a Rogue (adoptive foster sister)

Charles Xavier (Professor X): David Haller a.k.a Legion

Peter Quill (Star-Lord): None

Peggy Carter: None

Bucky Barnes (Winter Soldier): None

Rocket Raccoon: None