First Name: Jefferson (Jeff). 

Middle Name: Donald.

Last Name: Tracy.

Full Name: Jefferson Donald Tracy 

D.O.B:14/01/2009.

D.O.D: present.

Age: 46.

Siblings: N/E.

Parents: Sally (Smith) Tracy and James Tracy. 

Catchphrase: "Thunderbirds Are Go"

Children: Scott Tracy, Kiara Tracy, John Tracy, Alison Tracy, Jackie Tracy, Virgo Tracy, Virgil Tracy,

Tanusha (Kayo) Kyrano, Gordon Tracy, Georgia Tracy, Alan Tracy, Sophia Tracy, Adam Tracy and Jessica Tracy 

Preferred Operation: command and control from Tracy Island. 

Vehicle: TV21.

Call sign: Dad

Skills set: as if being a single father to 13 excitable children all under the age of 10 wasn't hard enough! When he lost his beloved wife he adopted another girl and when he lost one of his best friends his brother-in-law and his wife to a devastating plane crash he asked their young son is he wanted to come and live with them so he was overjoyed when he accepted but he said that he only would if his dad's brother could as well so they did and are to this day

Specialised equipment: N/E

Hobbies: being an amazing Fulltime dad, climbing with Scott and Sophia. 

Magical powers: mind-reading and clean up.

Description of powers: all he has to do is look at someone make eye contact with that person and he knows what they are thinking. But, he only uses his magic to clean up after his children (usually after they have been fighting (only with their powers)).

Colour of magic: blue.

Fun fact: when he disappeared he was assumed dead but when his children found out that he was alive even though it took eight years he was back on earth with his family and to welcome him back properly they had a big BBQ by the pool and they just had to welcome him back the Tracy way so Scott, John, Ali, Jackie, Virgo, Virgil, Gordon, Georgia, Alan, Sophie and Adam threw him into the pool on the island and then they all jumped in after him! Apparently, it was the best night in the Tracy family history! 

Backup career: retirement and parenting 

Nickname: Daddy Alien 

Reason for Nickname: he is the dad to all the Tracy children and has an especially strong bond with the younger triplets who also have a keen interest in space!

Personality (in under 5 words): loving, adventurous, intelligent, inquisitive and bit bossy 

Reason for these words: always looking out for others as well as his own children 

Place of residence: Tracy island 

Best friend: Lee Taylor

Boy/girlfriend/ crush: Lucile Tracy (wife)