Blondie, A.K.A. Experiment 142, is an illegal genetic experiment created by Jumba Jookiba. She is designed to cause people to make stupid mistakes. Her one true place is as a video blogger's pet.
Experiment 142 was the 142nd genetic experiment created by Jumba with Hämsterviel's funding. She was designed to cause people to make stupid mistakes (does so by wrapping her long neck around her targets, poking them with her spines and causes them to lose their ability to think straight which in turn causes them to make all manor of silly mistakes).
142 and the other first 624 experiments were deactivated and smuggled to Earth by Jumba during his mission to capture Experiment 626.
All of the experiment pods were released and scattered across the island of Kauai.
At the unknown point, she was activated, captured, tamed and named Blondie.
Her affects wear off after 24 hours, just enough time to send entire planets into chaos.