SCP-001 (Dr.Clef's Proposal), Fiction Taxonomy Wiki

SCP-001, also known as The Gate Guardian, is a Euclid/Keter class entity. It's a large humanoid entity, its appearance looks like an angel with flamming wings. It's impossible to contain this SCP, because of its size. But on account of its nature, it's not necessary to contain SCP-001.

Why do people keep saying SCP information from the VS Wiki is Canon? Isn't the only Canon SCP information on the official wiki? - Quora

SCP-001: Dr. Clefs Proposal - The Gate Guardian : r/HeroForgeMinis

PDF) Proceedings of the Fifth International Conference on Computer Science, Engineering and Applications (CCSEA-2015)

Dr Clef's Proposal - SCP Foundation

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SCP-001: Dr. Clef's Proposal by OvineOphanim on DeviantArt

SCP-001: Dr. Clef's Proposal - SCP Codex (podcast)