This is just a crazy level of fraud. A Taiwanese computer scientist has been caught creating more than 100 fake email accounts that allowed him to "peer" review his own research.
There may be other scientists involved in this fraud ring, but so far Chen-Yuan "Peter" Chen of the National Pingtung University of Education in Taiwan is the only one being named. At least 60 papers linked to him have been retracted following an extensive investigation by the publishers of the Journal of Vibration and Control. In some cases, Chen seems to have created fake scientists from whole cloth. In other cases, he assumed the identities of real scientists.
The New York Times has a pretty clear summary of what happened. And I'd also recommend reading the Retraction Watch blog, which documents the case in a lot more detail, but it a little harder to follow if you don't know the basics.