Yelena appears to maintain a very relaxed demeanor while having dry, humorous undertones to much of her actions. 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. She works for the anti-Marley faction, a devoted follower of Zeke Jaeger.