Wendaloo is the Center's agent and employee, Billy's possible love interest and one of the major characters of the episode, Nightmare of the Coven from the first season of the animated series, Martin Mystery.
Her personality was less described as silent and quiet which she was not interested at Martin.
Wendaloo's appearance was shown as a slender alien with lavender blue skin, black thin eyebrows, aqua green almond eyes with white dots, dark lavender purple lips, long cerulean blue hair and lavender blue antennae on the top of her head. Also, she wears a white long-sleeved dress with the Center's logo on the left and white boots.
Role in the episode
When Martin, Diana and Java entered the Center from Torrington Academy's door, Billy has introduced the trio to Wendaloo, which she was standing and also was not interested at Martin (thanks to Diana's bet on him by not flirting on girls for a week).