Yelena is a major supporting character in Shingeki no Kyojin (Attack on Titan). She is a tall, intense, and enigmatic member of the anti-Marleyan Volunteers who becomes closely involved with Zeke Yeager and the Eldian restorationist cause. Her role in the series is significant because she helps connect Paradis Island with the outside world’s politics and military conflict. Yelena is highly devoted to Zeke and often acts as a strategic intermediary, influencing key events through her loyalty, manipulation, and ideological commitment.