She is voiced by Grey Griffin.
Master Doom has a green head with grey-blue spikes on top. Her left eye has a light blue iris, and her right eye has a purple one.
She wears a black robe with an imposing green and purple collar.
- Master Doom's dialogue is processed in a way to make it sound like she speaks with multiple voices at once. In the Japanese-language version of the show, the aforementioned multiple voices sound as if they are a combo of both male and female.
- Master Doom's eyes could be described as possessing complete heterochromia of the iris.
- Main article: Master Doom (Character)/Gallery
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