Kevin, the SCP Bot explains the meaning behind each of the SCP Classes. To most, there are just 3 Classes known, Safe, Euclid, Keter. But there are 5 official classes. Safe, Euclid, Keter, Thaumiel, and Apollyon. Subscribe for more SCP Foundation Files. Now on YouTube! https://www.youtube.com/channel/UCHvwHFhZlVsf-0YWULKVxAg Secure, Contain, Protect - SCP Foundation http://scp-wiki.wikidot.com Robotsradio.net Learn more about your ad choices. Visit megaphone.fm/adchoices