*Zeena is a female Zeti with a slim-yet-curvaceous figure - having a slender upper-body that curves out into fairly wide hips and shapely legs. Her upper-body is also colored lime-green with two black stripes around her waist, while the lower half of her body is black. Her feet are tipped by small lime-green toes, with a third smaller one on each heel. Zeena's tail is thin and curly, ending in a chameleon-like swirl, similar to Espio the Chameleon's. Her wrists have black stripes around them while her five-fingered hands are black, with a hot pink pointed nail on each finger. The overall appearance of her body could suggest the likeness of a long-sleeved minidress with a pair of open-toed pants underneath.

Zeena has long green hair that parts to the right, extending down to her calves. On the left side of her head is a lone curved and striped horn that has an alternating black and hot pink coloration. Her circular eyes have blue irises with slit pupils, yellow sclera, amber eyelids and black rings surrounding them. The color of her lips match her eyelids, with her mouth possessing small fangs.

Zeena is a feisty, cold-hearted and cruel individual who lacks initiative. She is very selfish and indifferent, 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 will accomplish the tasks given to her to the best of her ability.

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. She is also very fashion-savvy and will not hesitate to criticize others for their fashion sense. She also appears somewhat flirtatious in both speech patterns and body language, even flirting with Sonic while fighting him. Despite showing a lady-like composure most of the time, though, Zeena has a terrifying temper and is not shy about showing it. Zeena also seems to view men as inferior to women, expressing embarrassment about losing to a boy the last time Sonic defeated her.

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. She is also rather vengeful, given that once Zeena was freed from Doctor Eggman's enslavement, she launched an attack on the scientist. Similarly, when Sonic insulted her, she wanted to punish him severely.

In the IDW Comics, Zeena acts similar to how she does in the games. She is known to be sassy and quite sarcastic when talking to others. She does not take as much interest in violence as the other members of her team but will still participate in fighting alongside them. She is very selfish and quite egotistical, meaning she likes to hear compliments about herself and can be slightly swayed if someone compliments her. She is also slightly lazy and prefers to take care of herself. Since she thinks so highly of herself, Zeena tends to underestimate those who oppose her.

Like all of the other members of the Deadly Six, Zeena is malicious, will employ the use of violence when she cares to, and does not care for the well being of anyone other than her fellow Zeti. Zeena even finds the idea of people being kind, empathetic and compassionate “gross”. She is also a very vengeful person and has no qualms in enslaving or destroying an entire world just to take revenge on someone that upset her, as evidenced when she and the other members of the Deadly Six tried to use the Metal Virus to turn every individual on Sonic's world into Zombots out of hatred for Dr. Eggman and Sonic. Zeena only finds true fear from her leader, Zavok.*