As per many sources, Lobster Karen has been identified as a woman named Anna Haiti. 

However, this has not been confirmed yet by a reliable media agency. Further investigation will reveal more about her, but we will have to wait some more time until then. 

Initially, she was referred to as “Karen.” A “Karen” is a slang term for a middle-aged white woman who is angry, obnoxious, entitled, and frequently racist.

Wikipedia has defined “Karen” as “the term is a meme depicting white women who use their privilege to demand their way.”