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1. Know Thy Enemy by lilyseyes

   Fandoms: Iron Man (Movies), Captain America (Movies), Marvel Cinematic Universe, The Avengers (Marvel Movies)  

   • Mature
   • Creator Chose Not To Use Archive Warnings
   • F/F, F/M, M/M
   • Work in Progress

   13 Nov 2025

   Tags

   • Creator Chose Not To Use Archive Warnings
   • James "Bucky" Barnes/Tony Stark
   • Tony Stark
   • James "Rhodey" Rhodes
   • James "Bucky" Barnes
   • Steve Rogers
   • Sam Wilson (Marvel)
   • Natasha Romanov (Marvel)
   • Bruce Banner
   • Clint Barton
   • Pepper Potts
   • Nick Fury
   • Maria Hill
   • Hydra Agents
   • Canon Divergence - Post-Captain America: The Winter Soldier
   • Enemies to Friends to Lovers
   • Winter Soldier Bucky Barnes
   • AU
   • Comic Book Science
   • Canon-Typical Violence
   • BAMF Tony Stark
   • BAMF Bucky Barnes
   • Protective Steve Rogers
   • Protective Bucky Barnes
   • Protective Tony Stark

   Summary

   In the aftermath of the Triskelion battle, the Asset makes a choice not to return to HYDRA. However, before he can completely disappear, he needs to have the kill switch in his metal arm removed, so he seeks out the only person with the capability - Tony Stark.

   Language:

   English

   Words:

   52,973

   Chapters:

   10/?

   Comments:

   93

   Kudos:

   833

   Bookmarks:

   303

   Hits:

   18,672