Background
Born into an unassuming family in Marley, Yelena eventually became disillusioned with her own country. After meeting Zeke Yeager, Yelena concocted a plan to solidify herself in history by helping Zeke save the world.
As part of her narrative, Yelena created a false background for herself, claiming that her homeland was invaded and conquered by Marley. She was forcibly drafted as a soldier to fight in the Marleyan military, where she met similar-minded soldiers and organized them into the Anti-Marleyan Volunteers to fight against Marley.
Appearance
Yelena is a very tall woman with her blonde hair styled in a short bob with straight bangs. She has large dark gray eyes and somewhat androgynous features due to her build and style. She also sports a chinstrap beard, which is later revealed to be fake. Originally, Yelena wore the standard Marleyan military uniform, but after disaffiliating she began wearing a casual white button-down with a dark blazer and pants.
Personality
Yelena is a fervent follower of Zeke Jaeger, holding great admiration and respect for him. She is usually calm and collected, her demeanor remaining unchanged even when Jean Kirschtein yelled at her for failing to see her job through. Nonetheless, she is willing to take responsibility and apologizes should she fail in her task. Yelena appears to maintain a very relaxed demeanor while having dry, humorous undertones to much of her actions, however, she was described as a ruthless and resolute leader by Onyankopon as she dirtied her hands in more than an occasion for the sake of her organization and reaching her goals.
Many have noted that Yelena is somewhat deranged in her zealotry; if any of her comrades are thought to be working against their goals or insult those whom they are ultimately trying to save, Yelena will come forth and kill them without hesitation. It can also be argued that she is a sociopath, basking in the destruction of numerous airships and countless people while smiling and on the verge of tears.