Google has a special logo on many of the Google properties, not Google U.S., for Mary Shelley. Mary Shelley is well known for novel, Frankenstein. The Google Doodle is a gothic theme, which conveys Mary Shelley’s work as a writer.
She started writing Frankenstein at the age of 18, completed it a year later on May 1817 and it was published on January 1, 1818. Here is the dark and scary Google Doodle for Mary Shelley’s 213th birthday: