Raz is bipolar, meaning she's highly emotional and easily switches from one extreme to the next such as being
extremely chipper and happy one moment to becoming infuriated and psychotic the next.
This is all due to her malfunctioning pak and it's lost ability to regulate emotions (which is also
why she actually has the capacity to love where other irkens do not).
Being a defect and highly emotional is something she tries to hide from other irkens and the armada but she isn't
very convincing when she tries ^^; but seeing as she's actually pretty good at her job they seem to overlook
that fact, besides her loyalty has never wavered and her psychotic emotions tend to give her a unique edge
that other invaders do not possess (which is pretty scary considering that most irkens with extreme emotional
control are psychotic enough as it is).
Raz is very attracted to individuality and anything unique which is one of the reasons she fell in lurve with Zim
after seeing his performance in operation impending doom 1.