A glitch alien that can appear during mis-coded events. First seen on April 1st 2012.
! SHIP TYPE O NOT DEFINED ! is a glitch alien that accidentally didn't identify itself on the client side of the game. They appear only when there is a large bug, usually when implementing an alien event. These aliens aren't special; rather, they are just normal aliens with a default look Defcom and the admin Police ship and default "error" name. If you hit an Alien with WIZ-X rocket, there is a chance to see that glich.
The rewards that the alien gives out depends on the alien that was "morphed" into (which is always an alien corresponding to the map you're in). For example if you're in 2-7 and the alien could be a Kristallon: giving 409,600 credits and 128 uridium. Their behavior also depends on the alien they are supposed to be.
These glitch ships have the same graphics as the Defcom or Police ship.