Marshall, Carter & Dark Ltd is a fan-made spin-off site of the SCP Foundation, based on one of the many Groups of Interest. The main feature of the site is the Catalogue, which is a collection of entries on products that have been sold to various wealthy consumers, looking to impress their fellow aristocrats by showing off the various anomalous artefacts they possess.
This organization is run by Misters Marshall, Carter & Dark. These three gentlemen have been active since the early 20th century, and tend to keep to themselves, rarely showing themselves in public. It is uncertain whether or not these three gentlemen are even human, and it's established that they are all over 100 years old.
- Aristocrats Are Evil: The members of Marshall, Carter & Dark Ltd.
- Auction of Evil: It seems that MC&D hosts a lot of these.
- Bazaar of the Bizarre: The entire organization in a nutshell.
- Covert Group with Mundane Front: MC&D has a number of these.
- Dark Lord on Life Support: Mister Dark.
- Eldritch Location: Some are sold at auctions.
- Legitimate Businessmen's Social Club
- Names to Run Away from Really Fast: Marshall, Carter & Dark Ltd.
- Quintessential British Gentleman: The members of MC&D.
- Really 700 Years Old: Mister Dark.
- Science Fantasy: Many of MC&D's products work based on highly advanced science, while some work based on magic.
- Shared Universe: With the SCP Foundation and The Wanderer's Library.
- Spin-Off: Of the SCP Foundation.