SCP-927 (the Hadron Bomb) is an SCP article about an explosive device created from the Hadron Collidor. If the device is disturbed, it could detonate and create a supermassive black hole. 

First posted to the EditThis Wiki in 2008, the SCP is most notable for being the first SCP to use the Apollyon class. 

See: SCP-927 – Scp Wiki (archive.org)

SCP-927 is an explosive device recovered from a temporal leak at the Hadron Collider. The temporal leak lasted from 2008 to 2019 and caused may items (including the Hadron Bomb) to pass between time periods. Any disturbance of the device could create “a supermassive black hole.”

The SCP is contained in an “[EXPUNGED]” stored in an underground facility which must be patrolled by at least twenty “Omicron Class Defense Marshals” at all hours. To prevent accidental detonation, SCP-927 is prohibited from being brought to Site 19 or Site 62. 

SCP-927 has a dual object class of “Keter/Apollyon.”

SCP-927 was posted to the EditThis Wiki on April 14, 2008 by IP address 69.255.83.133.^[1]SCP-927 – History – Scp Wiki (archive.org) No 4chan posts in the old.sage.moe archive reference 927. In other words, the SCP was posted directly to the EditThis Wiki.

Only a single archive of the article talk page survives.^[2]Talk:SCP-927 – Scp Wiki (archive.org) There, Genereaver (an early SCP contributor) made a post on April 14, 2008 questioning what the Apollyon class is, why it had not been added to the object class list, and why other SCPs with “world/universe shattering power” did not use the class. Genereaver further questioned how the SCP Foundation knew both when the future temporal rift would take place and what a “Hadron Bomb” would do given that they had plainly never set one off. Proxtown posted the following in response later on that day:

The answer to all these questions, my dear man, is that the author of this article was trying very hard to make it impressive and ended up pouring on too much Ostentatious Sauce. Also, there is no Appolyon class, whoever wrote this just pulled it out of his butt. 

Over the next several days, multiple contributors praised the idea of the Apollyon object class; contributor Steelkun saw value in having different object classes for SCPs that could “blow up 100 ppl in a second” and SCPs that could “disrupt reality itself/destroy the world.”

While only a single archive exists of SCP-927’s talk page, the article sparked discussion about additional object classes on the object class list talk page.^[3]Talk:SCP Object Classes – Scp Wiki (archive.org)

SCP-927 was transferred to the Wikidot website by August 1, 2008.^[4]The SCP Institute: SCP Series (archive.org) By August 31, 2008, the Apollyon class had been removed from the article.^[5]The SCP Foundation: Scp 927 (archive.org) See “last_edited” date.

SCP-927 appears to have attracted little attention for much of its presence on Wikidot. The article had zero net upvotes from September 7, 2008^[6]The SCP Foundation: Scp 927 (archive.org) to December 30, 2008.^[7]The SCP Foundation: Scp 927 (archive.org) The article gained a single net downvote by January 31, 2009^[8]The SCP Foundation: Scp 927 (archive.org) which it would maintain to the article’s final archive on March 3, 2009.^[9]The SCP Foundation: SCP-927 (archive.org)

No comments were made to the article by the March 3, 2009 archive and only two edits were ever made: once on August 1, 2008 and again on February 13, 2009.^[10]The SCP Foundation: Scp 927 (archive.org) and The SCP Foundation: SCP-927 (archive.org) The February edit changed the title from “Scp 927” to “SCP-927” but did not otherwise alter the SCP’s text.

Over March 2009, SCP-927 began to accumulate downvotes from Wikidot members. On March 30, 2009, Dr. Kondraki deleted the article and posted the following in the article deletion thread:^[11]https://scp-wiki.wikidot.com/forum/t-122020/deletion#post-434347 (archive)

SCP-927, “Hadron Bomb”. -10, mod consensus. Completely pointless, and already done better by SCP-782

Altogether, the article only survived for approximately 50 weeks.

SCP-927 inspired wide-spread discussion about object classes on EditThis which would continue on Wikidot.^[12]See Classifications – The SCP Foundation (archive.org) However, the SCP did not ultimately cause any changes to the object class system nor is there any evidence that SCP-927 caused any additional usage of the Apollyon object class.

While Apollyon would go on to become an official object class, this has its origins in SCP-2317. That SCP was posted in February 2014 with the Apollyon object class for its final iteration; this SCP would inspire additional SCPs to use the object class starting with two SCPs (SCP-3999 and S.D. Locke’s proposal) which were made to the March-April 2017 SCP-3000 contest.