She is the main computer system of Plankton's laboratory and often provides him with his more successful plots. Her face typically appears on the large monitor of a Mark III Surplus WIFEOMATIC in the Chum Bucket laboratory and she usually manifests as a portable wheeled computer.
Karen is a Mark II Surplus UNIVAC with 256 gigabytes of RAM storage.
She had been placed on one of the FBI's lists that concerned a small handful of extremely talented yet dangerous hackers in the world, and the FBI recruited her from there (Penelope).
Prior to her recruitment, she was a vigilante hacker mentored by Shane Wyeth, who would hack into companies and other businesses whom she felt were engaged in criminal activities, which attracted the attention of the FBI.
She also performed stand-up and has appeared at the Laugh Factory and The Improv.
In 2008, she participated in the Improv Everywhere prank "Mobile Desktop", in which she and two other people brought desktop PCs, including a CRT monitor, tower computer, keyboard and mouse into a Starbucks and used them as people use laptops there.
As an adult, Reynolds starred in the American television series Two Guys, A Girl and a Pizza Place, playing medical student Michael "Berg" Bergen, and in the National Lampoon movie Van Wilder.
In 1993–94 he had a recurring role in The Odyssey as Macro.
After appearing in supporting roles in several films, Plaza had her first leading role in the 2012 comedy Safety Not Guaranteed.The large control panel in the center of the lab is a part of the WIFEOMATIC and contains robotic arms and lasers that Karen controls.As revealed in "Friend or Foe," Plankton originally installed Karen as a security system at the Dump.Her hacker nickname was "The Black Queen", likely due to her habit of dressing in black, Gothic clothing and makeup.She was arrested by the BAU in 2004 while they were investigating a case, and she was given a choice to either work for them as their Technical Analyst (as Hotch deduced a kind and loving nature from her cyber-protests) or serve jail time; she decided to accept the job.According to Shane, she did so because she wanted to do something more useful and noble than violating and vandalizing websites.