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* Physical appearance.
Cousin Maldehyde was one of the late Col. Beauregard Sanders's relatives.
Cousin Maldehyde is an elderly Caucasian female, with white hair.
She always has a sour expression.
Scooby-Doo, Where Are You!
She had a chance to inherit a share of a million dollars from the Sanders estate if she stayed overnight in Sanders's old house, but she was scared off by the Phantom Shadows. It cost her nothing because the money was Confederate and worthless.
- She is always referred to as "Sweet Cousin Maldahyde", even though this is not justified by her expression. The name may be derived from formaldehyde, a common embalming agent.