The adaptation mainly follows the same plot as the book, except Olivia is more honorable to the Baudelaires as she never reveals their true identity to Count Olaf and tries to save their lives.She explains about why she gave Esme the location of the Sugar Bowl and that she swapped places with the previous Madame Lulu (Kit Snicket), so then she could retrieve it.Olivia Caliban, also known under the alias Madame Lulu, was a fortune teller and owner of the Caligari Carnival.In the book series, she first appeared in The Carnivorous Carnival and was the ninth guardian of the Baudelaire children and their second unofficial guardian, after Hal.In the TV series, she has an extended role and first appeared as a librarian of the library at Prufrock Preparatory School in The Austere Academy: Part One.She befriends Jacques Snicket and becomes a member of the Firefighting side of VFD.Jacques and Olivia detain Olaf at the local jailhouse, unaware of Esmé's new role.
Later, when the Baudelaires are riding in a caravan up the mountain, Olaf reveals that before her demise, Madame Lulu told him that the Baudelaires disguised themselves as freaks.
She later takes the role of Madame Lulu while the previous one (implied to be Kit Snicket) went to retrieve the Sugar Bowl from Heimlich Hospital.
In the book, Olivia has a somewhat cowardly personality, and becomes reliant on the Baudelaires to escape with them to the mountains.
The next morning they discover that when Olaf asked Madame Lulu "Is one Baudelaire parent still alive? Lulu breaks down and throws off her disguise, revealing herself as a woman named Olivia who just wants to give people what they want. Madame Lulu, along with the Bald Man with the Long Nose, died after falling into the pit of lions during the skirmish at the carnival.
Not wanting to watch her being eaten by lions, the Baudelaires silently walked away from the crowd.
" Although Olivia is her real name, she preferred to be called by the name "Madame Lulu".