Well, he lied to you, stabbed you with a syringe full of crazy nano-cells, created two monsters and almost killed us on a beach with one of them. Do we really need to know more to understand Yatz is off his nut? 
Creeper (Volume 2) #4 is an issue of the series Creeper (Volume 2) with a cover date of January, 2007. It was published on November 22, 2006.
Synopsis for "The Island of Misfit Souls"
The Joker arrives and throws Bolo Hewsen out a window. Vera Sweet covers the TV talk-show "You Are Wrong" while its sensationalist host Jack Ryder, remains missing. Vera reports on the mysterious, new "costumed citizen" the Creeper! Meanwhile, the Creeper heads to Gotham Tombs, a long-abandoned prison, seeking Dr. Yatz. He instead finds the abomination formerly known as Gavin Sullivan, who knocks him out. Back at the station, Vera is attacked by the zombie of Mike "Hagop" Hewsen. Luckily, Batman is on the scene. The Creeper wakes up to find out that he is a captive of Doctor Vincent Yatz, who is working with - The Joker!
Appearing in "The Island of Misfit Souls"
Featured Characters:
Supporting Characters:
Antagonists:
- The Abomination formerly known as Gavin Sullivan
- Bolo Hewsen
- The Joker
- Mike "Hagop" Hewsen
Other Characters:
Locations:
- Gotham City
- Gotham Tombs
Items:
Vehicles: