Per 
Item #: SCP-XXXX
Object Class: Euclid
Special Containment Procedures: SCP-XXXX is to be kept in a standard humanoid containment unit with the following conditions.
SCP-XXXX's containment cell must be vacuum sealed at with air filtration systems active at all time except for testing purposes.
No individuals with any form of open wound are permitted with a hundred feet of SCP-XXXX's containment unit.
The door to SCP-XXXX's containment units must be comprised of high-grade steel of a thickness no less than three inches with a lining of pure silver of a thickness no less than one inch on either side.
At least two Aerosol dispersal units containing two liters canisters of diluted Carfentanil must be operational at all times, in the event of an attempted containment breach both dispersal units must deploy their entire supply of Carfentanil.
At least two guards armed with M4 carbine 's loaded with silver tipped 5.56mm rounds must be stationed outside SCP-XXXX's containment unit at any given time.
Description: SCP-XXXX is approximately 256 cm tall and weighs approximately 300 pounds. SCP-XXXX is a white Scottish male of unknown age, his nationality only derived from repeated interviews and vocal accent.
Upon contact with human blood, SCP-XXXX will become agitated and mildly distressed.
Soon after SCP-XXXX will become severely emotionally distressed, beginning to cry and call out the names of individuals yet to be identified.
Approximately five to ten minutes after contact with human blood SCP-XXXX will begin to rapidly gain muscle mass, through unknown means, growing to approximately twice it's normal size. Soon after SCP-XXXX's bones and teeth will begin to restructure, taking on an appearance close to that of a North American grizzly bear, SCP-XXXX will also grow a thick coat of brown hair over its body during this process.
The transformation will take approximately ten to fifteen seconds after which SCP-XXXX will lose all cognitive abilities and will begin to violently attack any personnel or objects nearby.
Depending on the amount of blood was exposed to transformations can last anywhere from two minutes to forty-eight hours.
Addendum: SCP-XXXX was captured alongside SCP-XXXX, SCP-XXXX, SCP-XXXX and SCP-XXXX during an attempted break-in at site ██, at this time it is unclear as to what the SCP's were attempting to do, onsite personnel stated that SCP-XXXX and its compatriates were sweeping through the D-Class personnel holding cells through interviews have failed to ascertain whether a D-Class personnel was their intended target or whether the SCP's were simply making their way to another section of the facility.
Addendum 2: Repeated attempts at ascertaining the nature of SCP-XXXX's relationship with SCP-XXXX, SCP-XXXX, SCP-XXXX and SCP-XXXX have proven unsuccessful though there has been a clear link established after Dr. ██████ accidently
