|“||Moisturise me, moisturise me!||„|
|~ Cassandra to her assistants.|
Lady Cassandra O'Brien.Δ17 (or better known as Lady Cassandra) is a recurring antagonist in the TV series, Doctor Who. She appears in the episodes "The End of the World" and "New Earth". She claims to be the last pure human, but due to lots of surgeries she is now only skin with a face that is stretched in a frame.
She was voiced by Zoë Wanamaker regularly, and was portrayed by Billie Piper while possessing Rose and by David Tennant while possessing the Tenth Doctor.
Cassandra was born in Texas and her mother was from the Artic Desert. She lived in the Los Angeles Crevasse before moving to England. Cassandra had married at least five times and extended her life through 708 surgeries, until she was nothing more than a sheet of skin stretched (which had to be constantly moisturized) in a frame with her brain in a jar.
Sabotage on Platform 1
In the year 5,000,000,000 (also known as 5.5/Apple/26.), Cassandra was on Platform One along with several other wealthy aliens to watch the sun destroy Earth. Upon arriving, Cassandra presented gifts: the last ostrich egg (which was actually hiding a teleporter) and an "IPod" (actually a jukebox). She later spoke to Rose Tyler about how she considered herself to be the last pure human as the other humans later mingled with other species and produced what Cassandra considered "mongrels". She also told Rose that she has had 708 operations and would be having her 709th one which was getting her blood bletched. Unimpressed by Cassandra's lifestyle and attitude, Rose declares herself to be the last human and says that she would rather die than end up like Cassandra (whom Rose brands "a bitchy trampoline") before walking away.
Unbeknownst to Rose, The Adherents of the Repeated Meme (who were secretly androids controlled by Cassandra) follow her and knock her out and place her in a room with a descending sun filter as revenge for insulting Cassandra. Fortunately, The Ninth Doctor is able to save Rose by making the sun filter rise. Cassandra used Robot Spiders (hidden in silver balls given to other guests by the Adherents of the Repeated Meme) to sabotage the sun filter, take the other visitors like the Doctor, Rose, the Face of Boe and many others hostage to get ransom money for more surgery. After the spiders were stopped, Cassandra had the shields protecting Platform One from the sun turned off and teleports away, leaving the others for dead as she had shares in their companies which would triple in their deaths. The Doctor was able to stop her and teleport her back to Platform One without her assistants to moisturize her. Due to this and the high temperature, Cassandra's body dried up and she exploded.
On New Earth
As her brain had survived, Cassandra was revived by getting a new piece of skin from the back of her old body and having her eyes being retrieved from a bin. 23 years after the Platform One incident, she resides in the basement of a hospital on New Earth ran by the Sisters of Plenitude where she had her clone servant Chip lure Rose to her and use a psychograft to transfer her mind into Rose's body. Eventually, she started to work together with the Tenth Doctor, as she wanted to survive and would switch from Rose to the Doctor and at one point, an infected patient. Eventually, Chip offers his body to her which she accepts but unfortunately due to being a clone, Chip has only a short lifespan, so Cassandra finally accepts death, but not before the Doctor and Rose take her (still in Chip's body) back to see her younger self, whose arms that she dies in.
Cassandra (who was probably a tyrannical aristocrat) was very elitist and discriminatory, so she "looked down her nose" at the working-class Rose Tyler, who she considered "common". She was extremely arrogant and selfish at times, claiming to be the last "pure human" and considered all others to be "mongrels" due to their intermingling with other species. She was also a very callous, sly, devious and manipulative individual, being perfectly willing to let all residents of Platform 1 be burned to death by the sun just to make money.
Cassandra's greatest failing was undoubtedly her complete unwillingness to accept death, despite the fact that, according to Rose, it was better to die than live like her. The Tenth Doctor was appalled by her willingness to possess bodies just to prolong her own lifespan, as it robbed the people of their own lives. Only when she discovered that Chip's body was close to death did she finally accept that it was time to die.
Cassandra's Metal Spiders
The Metal Spiders (also known as Robot Spiders) were used by Lady Cassandra for infiltration, observation and sabotage, They first appear in the Doctor Who episode called "The End of the World". The robot spiders were small robots with four tentacular appendages and two saucer-shaped body parts. The top part had a red eye which could emit light. Individually, they weren't very strong or dangerous, but could be formidable in large groups. Their small size, great mobility and large numbers made them highly effective as sabotage devices. The metal spiders were transported by metallic orbs, which were in turn transported by the Adherents of the Repeated Meme. Cassandra used them to destroy Platform One, destroying the systems which protected it from the Earth's destruction.
On New Earth, Cassandra used the metal spiders for surveillance both inside and outside the New New York Hospital. She used them to spy on the arrival of the Tenth Doctor and Rose Tyler on New Earth. However, Cassandra's death not long after this observatory mission led to the end of their use. Regardless, it is unknown what became of them afterwards.
- According to the reference book, Doctor Who: Monsters and Villains, which is an invalid source for in-universe articles, Cassandra was born as Brian Edward Cobbs, in the ruins of the Walsall Apology, in the old Calendar Year of 4.99/4763/A/15.
- In "The End of the World", Cassandra talks about "the time when she was a little boy", making her the first openly transgender character in Doctor Who. Despite this fact, in the episode "New Earth", she acted surprised to be in a male body (the Tenth Doctor's), though this might have been because of the writer's forgetting about her originally being a man or perhaps that it had been so long since she her transition that she had forgotten what inhabiting a male body felt like.