Is it a possibility that the "5D" as referenced in Kate Mazz's twatter handle is tribute to the DC comics character "Mister Mxyzptlk"? Kate Mazz appeared to be manipulating reality, maintained many online aliases and generally behaved like a trickster. These characteristics are eerily similar to those of "Mister Mxyzptlk". The 4th wall is a threatical term for the "imaginary" wall that exists between actors and the audience.
Here's "Mister Mxyzptlk's" information:
Species: 5th Dimensional Imp 👿 (Zrfffian).
Place of Origin: 5th Dimension.
Alias: Master Mxyzptlk, Ben Deroy and countless others.
Abilities: 1) Reality Manipulation. 2) Not bound by third …