Lucy Liu's head

Lucy Liu's Head is the head of Lucy Liu, she is not stored in the Head Museum. For much of her life Liu has been at Kidnappster, where they have been holding her prisoner for 800 years. During her time there many people downloaded illegal copies of her. After being broken out by Bender, Leela and Zoidberg, Liu began a relationship with, and living inside, Bender, who is also cheating on her.

Liubot
The Liubot was one of many computer generated robotic duplicates of Lucy Liu, one of which was made by Fry. Later a swarm of them was sent to kill the Planet Express crew by the Kidnappster CEO. After the attack it is believed that all Liubots were destroyed.

Trivia

 * Lucy Liu recorded some lines in advance for a future episode.
 * Liu was apparently inside Bender during the Roswell incident, though Bender may have taken her out of his chest before that episode and put her back before her next appearance. It is also possible she was in his chest cavity during the events of . Luckily heads survive in jars indefinitely, assuming they are fed.

Quotes

 * Lucy Liu: Are you the last copy of me? Liubot: (in a weak voice)Yes. Lucy Liu: Erase her, Fry. Fry: What?! No! Lucy Liu: Fry, when you downloaded her without my permission you stole my image and in the end that's all I really have. That and the largest gold nugget in the world one mile in diameter.
 * Liubot: I'll always remember you Fry, MEMORY DELETED
 * Lucy Liu: Help they've been holding me prisoner for 800 years
 * Liubot: Oh Fry! I love you more than the moon, and the stars, and the [Robotic voice] POETIC IMAGE NUMBER 35 NOT FOUND.