Miss Reichenbach

Miss Reichenbach is supposedly the maid of Dorian Wormwood the retired stage actor. Actually, she is Wormwood in disguise.

Physical appearance
She has her white hair in a bun.

Personality
She cheerfully brings sandwiches for the gang.

Scooby-Doo, Where Are You? (DC Comics)
The fact that the name 'Reichenbach' is like Reichenbach Falls, where Sherlock Holmes was thought to have fallen to his death, is no coincidence. All the names were picked for associations with Holmes, as clues.

Appearances

 * Scooby-Doo, Where Are You? comic series by DC Comics
 * The Strange Case of Dorian Wormwood