The following chat log is the only evidence we have of the incident and the entity itself.
<Base54> Sir. #93.5 has breached the facility. It has grown to an enormous size and is mauling the others. We cannot sustain ourselves much longer.
<Operator49> Guys, come on. You had one job. I guess I’ll go and check up on you all once we’re done cleaning up Entity #403’s enclosure.
<Base54> 10-4, b
Base 54 suffered a strange explosion as he was sending the message.
<Operator49> 54? You there? …Hello?
. . .
After this moment, all communication with Base 54 has been terminated for unknown reasons. Do not go looking for more information.