|This needs a stretch. (Feel free to remove when satisfied of completion.)|
* Physical appearance; clothing.
Iggy is an adult Caucasian male, with black hair and thick moustache, the latter being his distinguishing feature that tells him apart from his brother. He isn't very tall.
Despite being the serious one, he comically slaps his foolish twin with his hat.
The New Scooby-Doo Mysteries
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- Their last name is a reference to Professor Moriarty, Sherlock Holmes' criminal nemesis; even though Sherlock Holmes is a real person within the Scooby-Doo universe, no connection is made between the twins and Professor Moriarty.