Sculptor

The Sculptor is the main character of The Sculptor's Clayground. "The Bush Family Are War Criminals" and another unnamed sculpture can be found in Family 00437's living room. The other sculpture was possibly an art project by Subject 5.

Lynks Theory
The sculptor had started the craze for Lynks disease in the 00437 household. He apparently had lynks but was healed thanks to his clay. Which also gives people lynks.

Catchphrases
The Sculptor's catchphrases, accoring to the official site:

"Where is that happening?"

"Let's wait till we hear it from the dog's mouth."

"No time to worry about old stuff."

"Where's my treat!"