The gang has encountered more than one fake monster supposed to be the Loch Ness Monster.
- Loch Ness Monster: It shows up to be photographed as part of the Laff-a-Lympics, but may or may not be real, in the Laff-a-Lympics episode, The Sahara Desert and Scotland.
- Loch Ness Monster: Jamie Craigmore was smuggling in Swiss watches and other goods to Scotland using a mini-sub disguised as the monster; he controlled it with the sound of bagpipes, which he played in the disguise of the Ghost of Finnyan McDuff. It appeared in the The Scooby-Doo Show episode, A Highland Fling with a Monstrous Thing.
- Loch Ness Monster: In the direct-to-video film, Scooby-Doo! and the Loch Ness Monster, there was actually three separate vehicles: a disguised submarine, a disguised van, and a land-walking robotic version.