JKL

J


Jabe
Home Planet: Cheem
Life Form: Tree of Cheem
Info: Jabe was charming and flirtatious, originating from her ancestors belonging to a tropical rainforest on Earth. She could project a liana from her wrists, although it appeared that showing this was not a social normality for her kind.


Upon meeting the Doctor, she took an immediate interest in him, and felt grief at the loss of an entire species, with he as the only survivor. Jabe died when she stayed behind to give the Doctor time to fix the sun filters, sacrificing her life as she burned.
Episodes appeared: End of the World


Jagrafess
The Mighty Jagrafess of the Holy Hadrojassic Maxarodenfoe
Home Planet: Jagrafessfold Breeding Grounds
Life Form: Jagrafess
Info: The Jagrafess is an ancient, enormous, grey-skinned monster. Since it could not operate Satellite Five's controls by itself, a human known only as The Editor carried out its orders. It contained a huge amount of heat, fat, muscle and water, and needs to stay cool in order to remain alive.


Due to this, the heat from level 500 of Satellite 5 (where the Jagrafess was installed) was channeled away to the rest of the station, allowing the Jagrafess to remain in a cool climate. Last seen, it had died through overheating.
Episodes appeared: The Long Game


Judoon
Home Planet: Unknown
Life Form: Humanoid rhino
Info: Judoon are galactic police, brutal in their application of the law and highly logical in their battle tactics, but not very intelligent.


They will work for anyone under Galactic Law but, whilst their behaviour appears to be of military police force, they are little more than "interplanetary thugs"
Episodes appeared: Smith and Jones, The Stolen Earth


K


Krillitane
Home Planet: Krilla
Life Form: Composite race
Info: The Krillitanes take physical features from races they conquered. They took their bat-like appearances from the inhabitant of Bessan, and before that resembled humans with long necks. They can also create a morphic illusion of a human.


Krillitanes are carnivorous and will eat anything from rats to humans. They also produce Krillitane oil, but although it will increase human intelligence, it is deadly to the Krillitanes as they have changed their biological makeup so many times.
Episodes appeared: School Reunion


L


Lazarus
Home Planet: Earth
Life Form: Human
Info: Beginning as a 76 year old, Lazarus' research concerned the use of sonic technology to enable rejuvenation. After emerging from his machine, he appeared younger. However, the experiment mutated his DNA, and he transformed into a large, insectoid creature, which steals the life energy from other beings.


After going on a rampage, Lazarus is seemingly killed. However, he recovered in the ambulance and hid in Southwark Cathedral. Martha and Tish lured him to the top of the belltower, and the Doctor played the organ at maximum volume, which resonated the church bell and played havoc with Lazarus's sonically-manipulated genetic structure, eventually causing him to fall to his death.
Episodes appeared: The Lazarus Experiment


Lumic
Home Planet: Parallel Earth
Life Form: Human, later Cyberman
Info: Lumic was the owner of Cybus Industries and the creator of Cybus Cybermen. Though he publicly denied rumors of ill health, Lumic suffered from a terminal illness. He devoted all of his resources to discovering a way to extend his own lifespan.


He began abducting homeless people as a test subjects, upgrading them into Cybermen. Once his breathing apparatus was damaged, Lumic realized that he would soon die and pleaded with his Cybermen to help him. Despite his protests, they forcibly upgraded him into a Cyber-Controller. He eventually met his end when he fell from a zepplin.
Episodes appeared: Rise of the Cybermen, Age of Steel



(Fifth part continued here: M-O)