Yelena belova

Origin: A product of the Red Room, she was trained as a Black Widow assassin alongside Natasha Romanoff. MCU appearances: Debuted in Black Widow (2021), appeared in Hawkeye (2021), and is set to star in Thunderbolts* (2025). Relationship with Natasha: She is Natasha Romanoff's adoptive younger sister, sharing a close bond despite their shared traumatic past. Arc in Hawkeye: Initially seeks revenge on Clint Barton, believing he caused Natasha's death, but ultimately learns the truth about Natasha's sacrifice and forges an alliance with him. Affiliation: Works for Valentina Allegra de Fontaine and is recruited to form the Thunderbolts, a team of anti-heroes. Skills: A formidable spy and assassin, expert in combat and marksmanship.