Vonnie is at an average height with short, curly dark red hair and amber eyes. She wears blue glasses and dark pink lipstick. She also wears a mint green shirt underneath a dark brown windbreaker jacket, dark blue jeans, and black high heel shoes.
Vonnie is courageous and caring. When facing threats, she is bold, not showing any fear and being a capable fighter. While passionate and ferocious when dealing with foes, she is very kind and loving. She shows a lot of love and support towards her husband and her son, and she is friendly toward others, including Penn's friends. She is prone to unintentionally embarrassing Penn, however. She is calmer and more rational than Brock at times, but she still is very warm and open to others.
Vonnie loves her husband, and both work together as a great, skilled team.
Loving her son, Vonnie enjoys hanging out with him (or getting to talk to him via MUHU after getting trapped) and giving him advice. Not wanting Penn to worry about being a part-time hero for most of his childhood, she and Brock kept their legacy a secret until the time was right. She unknowingly reveals embarrassing information about him to his friends. While knowing that Penn is in good hands and excelling as a part-time hero, she misses him and hopes to reunite with him soon, along with hoping that nothing bad happens to him.
Vonnie and Phyllis get along well, having worked together for a long time. Phyllis is searching for her and Brock in the multiverse.
Vonnie doesn't like Rippen, who trapped her and Brock in "Zap One" and nearly killed or trapped his son on a few occasions. She is clever when dealing with him, however, by crying in order to make him laugh and revert back to Penn before the time runs out in "Rip-Penn".
Vonnie likes Sashi and Boone, calling them with Penn her "little superstar trio" in "The Old Old West".
- North Pole Down
- The Old Old West
- It's a Colorful Life
- The Ripple Effect
- The QPC
- Zap One
- Save the Worlds
- Vonnie is considered to be one of the greatest part-time heroes of all time.
- Vonnie passed on her curly red hair to Penn.
- In "Rip-Penn", it is revealed that she and Brock knew Rippen.
- "Zap One" later reveals that Rippen was the cause of them getting trapped, although it is unknown how.
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