The Killer Costume was first released in October 2009 in Account Upgrades and the costume has been retired and forgotten about ever since. A new version of the Killer Account Upgrade has been released, with 8 new killer themed items and either a Killer coloured Kujo or Feliz Enchanted Plushie. This set also includes a retired Killer Costume, so this AU will retire earlier than normal, in 2 weeks, on June 19th.
The Fasoro, Feliz, Kujo and Sindi can now wear the Killer Costume.
The Gizmo, Ideus, Snookle, Tasi, Ushunda and Zetlian have been updated and are now wearing the new version of the Killer Costume.
