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1. Ironclad by lilyseyes

   Fandoms: Harry Potter - J. K. Rowling, Iron Man (Movies), The Avengers (Marvel Movies), Captain America (Movies), Marvel Cinematic Universe  

   • Mature
   • No Archive Warnings Apply
   • F/M, M/M
   • Work in Progress

   16 Jun 2025

   Tags

   • No Archive Warnings Apply
   • Sirius Black/Tony Stark
   • James Potter/Lily Evans Potter
   • Harry Potter & Tony Stark
   • Happy Hogan/Pepper Potts
   • James "Bucky" Barnes & Harry Potter
   • James "Bucky" Barnes/Steve Rogers
   • Harry Potter
   • Tony Stark
   • Sirius Black
   • Arcturus Black III | Sirius Black's Grandfather
   • Happy Hogan
   • Pepper Potts
   • Albus Dumbledore
   • Goblins (Harry Potter)
   • House-Elves (Harry Potter)
   • James "Rhodey" Rhodes
   • James "Bucky" Barnes
   • Peggy Carter
   • Steve Rogers
   • Original Children of James "Bucky" Barnes and Steve Rogers
   • Harry Potter is Lord Peverell
   • Kid Fic
   • Pre-Hogwarts
   • Pre-Avengers (2012)
   • Parent Tony Stark
   • Wizard Tony Stark
   • Harry Potter is Tony Stark's Child
   • Parent Bucky Barnes
   • Parent Steve Rogers

   Summary

   Tony Stark had helped his cousin have a child when it was discovered he was unable to sire one, on the agreement the Tony would raise him if something happened to Lily and James Potter.

   Time line – Harry born 1990 / Tony born 1970

   Language:

   English

   Words:

   125,492

   Chapters:

   31/?

   Collections:

   12

   Comments:

   837

   Kudos:

   5,286

   Bookmarks:

   2,156

   Hits:

   218,132