God creates a wasp :)
God: Okay, so make it reeeeally tiny. Like less than half a fly.
Angel: okay... a bug.
God: now give it's face a sword, but it has a hole so it's basically a mouth.
Angel: weird.. but okay...
God: and give it wings.
Angel: eh, not half bad Go-
God: NOW MAKE IT EAT THE BLOOD OF ALL LIVING ANIMALS AND HUMANS
Angel: *shook* o-okay
God: okay. Now make sure whenever a human is bit it feels the pain of a million suns burning it, making it scratch until it bleeds out.
Angel: . - .
God: and make sure it also transfers diseases through the species. Give 'em a taste 'o that! *evil grin*
Angel: *cries*
Angel: *whispers; I'm so sorry..*