GUACMS

Genuine Unaligned Ambiguous Chat Message System(or GUACMS) is a now-defunct chatroom website from 1992 that slowly died out overtime. As technology advanced through time, GUACMS grew more and more sentient, creating its own personality & set of mannerisms built out of messages from every user who used the site. Currently, they now walk the earth and do regular people stuff, like eating and writing and all that. 

It's unknown how they manifested into the real world.