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* Physical appearance.
Angus Haggart is one of the two quarreling sons of Lachlan Haggart.
Angus is a Caucasian male, with red hair. He is way more muscular than his brother, Colin, with a huge chest and very strong arms.
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Scooby-Doo! and the Loch Ness Monster
He and his brother were hired by Prof. Fiona Penbrooke to run the land-going version of the Loch Ness Monster, to convince Sir Ian Locksley that Nessie was real so he would take her photos seriously. They did it more as a prank than for the money.