Per 
Item #: SCP-5245
Object Class: Euclid
Special Containment Procedures: SCP-5245 is to be contained in a steel-reinforced canteen of half liter to maximum one liter, it must be sealed with compressed air in the upper part of it, for extra security protocols it's convenient to also keep both SCP-5245 and the canteen in a room of 3,28 feet lenght and 6,56 foot tall with walls, rooftop and floor all covered with reinforced steel, there's must be no windows and one door with no openings by wich air or oxygen can go trought since it's able to leave by even those small holes, at least four members of personnel with level three or higher must be watching the chamber at all times, two of then looking at cameras inside and outside the chamber while the other two keep walking outside the room for possible holes or breaches in the chamber
Description: SCP-5245 is a black puddle of a yet unknow black liquid, it can shapeshift into anything in its sight but it's primary form is a black slime similar to SCP-999, it also seems that he only shows his facial features at the moment of the attack, then two luminescent white eyes and mouth appear, if watched directly, it will cause ansiety to the victim who will now be known as SCP-5245-1, if not possesed or killed by SCP-5245 the victim will die in 45 min. after eye contact.
Addendum: SCP-5245-A: A report of an experiment made between SCP-5245 and SCP-999 to observe the interactions between the slimes.
SCP-999 enters the chamber, a Class-D personnel opens the canteen, the black liquid starts to get out of it, in the attempt of the Class-D to exit the chamber SCP-5245 already has him trapped in a black cobweb, the personnel outside close the door so SCP-5245 can't go out.
(screams are heard, after a few seconds, there's silence)
Dr. ████ then activates the cameras, the Class-D is gone as well as the black cobweb.
SCP-5245 can be seen in the top of the room while SCP-999 is down trying to reach it.
A Class-D is ordered to get inside and put SCP-5245 down, after refusing at first, he enters in the chamber, when he touches SCP-5245, it starts covering the Class-D with his mass (SCP-999 giggles)
SCP-999 touches the mass of SCP-5245 while on the feet of the personnel, then SCP 5245 produces a sound similar to a hiss but unintelligible, inmediatly splits into the original mass of SCP-5245 and the other half falls down, the Class D has been reduced to [DATA EXPUNGED], then the mass on the floor becomes orange, SCP-999 starts hugging and tickling the mass, SCP-5245 gets back into the canteen
5245: (scared) ¡Seal me inside and get that [DATA EXPUNGED] out of here, I don't want to see him again!
Dr. ████: You will try to escape if we get him out.
5245: I promise I won't, just take him away.
(Dr.████ calls for two Class-D personnel)
After 30 min. they get SCP-999 and leave
5245: Take the orange [DATA EXPUNGED] with you
Dr. ████: ¿Why, it's part of you?
5245: Not anymore
The other Class-D takes the mass and then closes the canteen.
