Role in the series
Zeena is a feisty, cold-hearted, and cruel person who utterly lacks initiative. She is very selfish and self-centered, preferring to look after herself by treating herself with free time despite the issues at hand, but she is not very likely to look after anyone else. Despite this, she can be persuaded when she receives compliments about her attributes, such as when she agreed to fight Sonic after Zavok complemented her speed, smarts and looks. Regardless of her lack of dedication though, Zeena is very serious and is likely to complete a task when given one.
Zeena is very vain regarding her appearance. She frequently takes care of her looks and is very protective of it, especially her nail art, and having it ruined infuriates her. Having an interest in fashion, her concerns about appearance extends to others, as she will criticize others' fashion sense. She also appears somewhat flirtatious in both speech patterns and body language. Despite showing a lady-like composure most of the time though, Zeena has a terrifying temper and is not shy about showing it.
Like the other members of the Deadly Six, Zeena is inherently malicious, sadistic and violent. An omnicidal monster, she enjoys inflicting pain, torturing and killing others, and has no problem causing global genocide for her own gain. Also, when Sonic was horrified and angered by seeing Tails turned into a robot, Zeena further taunted him for her own amusement. She is also rather vengeful, given that once Zeena was freed from Eggman's enslavement, she launched an attack on the scientist, and when Sonic insulted her, she wanted to punish him severely.