Winter's Children (Avengers)

"I'm not the only Winter Soldier."

The Winter Soldier program, nicknamed Winter's Children, or Винтера Дети, didn't end with Bucky. No. Bucky was just the beginning. Most of the Soldiers were fairly generic; HYDRA agents who yearned to serve a purpose larger than themselves, but one was different.

Anastasiya was the first life HYDRA created. The first set of DNA they manipulated before birth. The literal child of the Winter Soldier program.