Per 
CAPTION-GOES-HERE
Item #: SCP-5217
Object Class: Keter
Special Containment Procedures: How to contain ( Mystery Triangle ) To contain Mystery Triangle you will have to shoot its eye down, He becomes blind and his body gets weak so you start shooting its body Also it is weak to lot's light. When its eye regenerates its body becomes stronger and power fuller, Its containment must be really bright or it can go through the wall, It's cell should be 20m around him and a 20m up.
Description: He looks like a yellow triangle with a top hat and he can go through walls and he is really quick, He makes deals to D class/Choas for a special reward the more rewards he get the more people helps him, His plan is to raid the whole site and raid other sites but it will be really hard for him since he is big and he can not be seemed by Personnel.
Addendum: He wants to take over the whole with D-class and Choas because the world did not want him in there city.
