Vanexa is a light purple cat with a dark purple tail tip and black edges to her cheeks. Her eyes are bright yellow with only purple visible and no Iris.
In the short Bad Luck Jack, the black and white of her cheeks and ear tips has been expanded. She has dark purple on her eyelids with a light purple area under them with thicker black lines (possibly eyeliner) around her eyes. Her tail tip is a far more darker purple with a single purple stripe. Her chest and the underside of her tail have a white patch and her fingers and toe tips are now white. Her wrist, ankles, lower arms and legs are now the same dark purple as the tip of her tail.
Vanexa is not one to talk much often reading a book regardless of the situation. When she does speak (with or without prompting) it tends to be rather short and to the point. Despite this attitude though she is shown to be friendly as she tells Cameron to enjoy her stay and she assists in helping put Jack together in Bad Luck Jack.
Out of all the members of the Main Five, Spam is the one Vanexa spends the most time with while ironically he is the one she finds the most annoying out of her friends. She questions his need to write a song for every situation though she does agree with him on who their other friends are.
While she doesn't talk much with Jack, Vanexa considers Jack to be the most tolerable out of her friends in the Main Five. Along with the rest of her friends Vanexa won't hesitate to save Jack from danger such as when she helped scare a monster that was about to eat him.
Like with the other members of the Main Five, Vanexa doesn't talk much to Kayla but is still willing to spend quality time with her though Vanexa does admit that she doesn't understand Kayla's Australian Slang yet she is still willing to follow her lead.
Even though Zill is the friend Vanexa talks to the least, she is fine with having his company and both of them are willing to fight for their friends. Both of them also agree that Jack is the easiest to get along with out of the Main Five.
Vanexa possesses a terror-inducing glare that can instill intense fear in anyone who makes eye contact when she uses it. She used this ability during the Original Five's battle with the monster while Spam sang "Monster Fighting Time".
- Along with Jack, Spam, Zillion, and Kayla, Vanexa is one of Vivienne's "Original Five" characters she created upon the early origins of Zoophobia's creation.
- In the very early days of Zoophobia, she was often portrayed as the cynical yet psychotic. She was similar to Gaz Membrane from Invader Zim.
- Vanexa bears some similarities to Raven from the 2003 Teen Titans animated series.
- In the relationship tree, it is noted that Spam and Vanexa have feelings for each other. Although it was never fully confirmed, their interactions and their ironically opposite character implied that Spam and Vanexa were dating.