I was transported into the worst dimension, but it's fine I am the protagonist after all.

(No formating yet) (gotta write down the gist of my story)
The protagonist

Item #: SCP-XXXX
Object class: Safe
Containment procedures: SCP-XXXX is currently housed at Site-. . SCP-XXXX is to be kept in 5 x 6 meter cell furnished with a bed, a nightstand and a laptop (per request of the subject). SCP-XXXX should not under any circumstances leave Site-.. unless In imidiate danger of termination via the on site nuke.

Description: SCP-XXXX is a 17 year old male of Hispanic origins & approximately 1.7 meters tall. Subject shows signs of aging. SCP-XXXX is allowed to aid in the research and testing of other SCPs with the approval from level 3 personal.

SCP-XXXX is an entity that doesn't originate from this dimension, as explained by the subject in an interview with Dr. Oliver
[See addendum 2]

SCP-XXXX can not be harmed or effected negatively by any SCP entity or object. This was first noted when