Per 
NOTE: REWRITE IN PROGRESS.
Item #: SCP-XXXX
Object Class: Euclid
Special Containment Procedures: SCP-XXXX is to be contained in a standard humanoid containment cell at Site-06-3. SCP-XXXX is to be provided 14 books of its choice a week and access to online library sites. As a result of good behavior demonstrated by the SCP, it is free to interact with personnel if both parties agree to do so under supervision by security.
SCP-XXXX is currently uncontained. Currently, efforts are focused on getting the SCP back.
Description: SCP-XXXX is a male humanoid entity standing at 173cm tall and appears to be 20-25 years old. What sets apart SCP-XXXX from regular humans is its ability to speak in, read in, and write in every language. This includes binary, sign language, and ciphers it has never before seen. SCP-XXXX also possesses a reading speed of 1250 words per minute, about 5 times faster than the average human.
SCP-XXXX came to the Foundation's attention after it was discovered in the streets of Boston, having gotten the attention of people for its ability to seemingly know any language. Because of this, after the Foundation managed to successfully contain SCP-XXXX, Class A amnestics were used on those witnessing it.
Addendum 1: In order to demonstrate the SCP's ability, several tests were conducted. The tests and the results are available publicly to personnel.
Addendum 1.1: SCP-XXXX was given a sheet of paper with the text "Bird, pen, robot, four". Each letter was replaced with a random symbol. The word was then scrambled to create a unreadable cipher. SCP-XXXX was not shown any answer key nor given any information regarding the cipher. The cipher is written below.
◓♕𓃭⠶, ♗⠱𓅀, ➮⅗⅓𓆢◧, ※▹𓁗☉
SCP-XXXX read the words "Bird, pen, robot, four" out loud before saying "easy".
Addendum 1.2: D-1063 and D-1064 were both given the cipher "1j9sd4l0ccp-s". D-1063 was told the cipher means "mad wolf" while D-1064 was told it means "red dice". The cipher was then given to SCP-XXXX. SCP-XXXX stated that the cipher "has multiple meanings", it then proceeded to state both "mad wolf" and "red dice".
Addendum 1.3: SCP-XXXX was given a sheet of paper with the letters "aofmepxlsd" written on it. This sequence has no meaning. SCP-XXXX produced a new language where "aofmepxlsd" means "table". SCP-XXXX can now fluently speak this language.
Note: It seems that SCP-XXXX will invent new languages on the spot if it is unable to communicate in other manners.
Addendum 1.4: SCP-XXXX was given a single frog. SCP-XXXX managed to communicate with the frog and proceeded to play with it. After two hours SCP-XXXX taught the frog how to do a backflip, sit, stand on its hind legs while holding on to a wall, and attack.
Addendum 1.5: SCP-XXXX was given a deaf cat. SCP-XXXX begun to meow at the cat. After this form of communication failed, SCP-XXXX attempted to create a sort of sign language with the cat. When this too failed, SCP-XXXX fell into a state of depression and did not come out of it until it was given a normal cat 45 minutes later.
Addendum 1.6: D-1065 was blindfolded and brought into SCP-XXXX's chamber. D-1065 is deaf and knows sign language. SCP-XXXX forcibly removed D-1065's blindfold. It then begun to chat with D-1065. D-1065 reported being interested in the conversation and noted that unlike human conversations, SCP-5342 never misunderstood a word he signed.
Addendum 1.7: SCP-049's journal was handed to SCP-XXXX in an attempt to decipher the language written in its pages. The experiment was cancelled unexpectedly; see below addendum for more details.
Addendum 2: During an experiment for the purpose of deciphering SCP-049's journal, the site at which SCP-XXXX was being contained at was raided by the Chaos Insurgency. Several staff members were killed as a result of the commotion
