She first appeared when Lameton and the New Chum Bucket were introduced in the Season 7 episode "One Coarse Meal". She's a lot more naggy and insane than the original Karen and also has a different design. She also supports ISIS.
In "One Coarse Meal" she never cared about Lameton's fear of whales. This could be because she doesn't have as many feelings as others due to being a computer or she is bipolar. In the Season 10 episode "Lameton Gets the Boot", Lameton criticized her terrifying screensaver.