Trunks is the eldest child of his family. His mother is Bulma, his father is Vejiita. He has a younger sister named Bra. Trunks is half-Sayiajin on his father's side, as is his sister, though Bra excercises little of her Sayiajin ablities.
Bra takes very much after her mother Bulma and is the spitting image of her when she was younger. While Bra isn't much of a fighter, she is a typical teenage girl wearing skimpy clothes and shopping like crazy. She is old enough to drive in Dragonball which would make her at least 18, I know she is not over 18. Bra is one year younger than Pan, so she's around 13 in Dragonball GT.
Trunks is the older son of his family. He too, takes after his mother, in he has un-Saiyajin like blue eyes, and pale violet hair. However, unlike his mother, Trunks is half Saiyanjin on his fathers side, and is very powerful. At times Trunks is the spitting image of his father. While no where near as harsh or cold as Vejiita, he is often secluded and holds pose much like his father. Trunks is 28 in Dragonball GT (My friends and I have acurratly figured out the ages for alot of the DBGT characters).
Bulma is the mother of Trunks and Bra. She has short teal hair and now wears glasses. She is married to Vejiita, who is one of the two full-blooded Saiyajin's left. Vejiita is very cold, as is his nature. He is the former Prince of the Saiyan planet, Vejiitasei. His father, King Vejiita ruled there until the planet was destroyed by Freeza. In Dragonball GT Vejiita has a muchtache (which he later shaves, thank Kami-sama! ^_^), and black-brown hair that sticks stright up and is buzz-cut.
Pan is the only daughter of Gohan and Videl. Gohan is Half Saiyajin on his fathers side making Pan at least one-fourth Sayiajin on her fathers side. Pan has black straight hair like her father and mothers. She is very small, but fights superb. She wishes to be treated as an adult and that is one of the reasons she sneaks on the Capsule Corp. ship before they lauch to search for the Dark Dragonballs. Pan is 14 in Dragonball GT
Gohan is Pan's father. He is a College Scholar and seems rather nerdy. In Dragonball GT he has given up fighting, as he used to be cities protector as the Great Saiyaman. He wears glasses and a suit. However, he is still extremely powerful, and is more powerful than Goten, his younger brother. Gohan is 36 in Dragonball GT [this is not counting the year he aged in the Room of Spirit and Time].
Videl is Gohan's wife, mother of Pan, and only daughter of Mr. Satan the protector of Satan City, where they live. Videl was much like Pan was at a younger age. She has black hair and blue eyes. While she does know how to manipulate her ki to allow her to fly, she has no Saiyajin in her. She used to accompany Gohan as the Great Saiyaman 2. However once Chichi, Gohan's mother, made him give up fighting and become a Scholar, Videl gave the job up as well. Videl is also 36.
Other relitives to Pan are her grandfathers, Son Gokou on her fathers side, the only other Saiyajin Full-breed besides Vejiita, and the most powerful. Gokou was turned into a child again by a ill-made wish by Pilaf. Gokou, Trunks and Goten set out to gather the 7 Dark Dragonballs to return Gokou to his proper age. However, Goten was distracted by his phone, and Pan stole aboard the ship and took Goten's place.
There is Mr. Satan, her grandfather on her mothers side. Mr. Satan is the 'protector' of Satan City, though in all actuallity he really does little for it. He claims to have trained Gohan and Goten at various stages, but we all know that Piccolo trained Gohan as did Mirai-Trunks. Mr. Satan is only looking for fame and fortune.
Her Grandmother, Chichi on her fathers side, wife of Gokou. Chichi is a very great lady but constently worries over Gohan, Goten and Pan because she fears their fighting. When Gokou died very early on in Gohan's life (about 5 years old) Chichi was given the job of raising him alone. Though Piccolo helped alot, to train Gohan to be ready for Vejiita and Nappa's arrival. Later when Gokou comes back, she has a 2nd son Goten.
Goten is her uncle, Gohan's younger brother. Goten is also half Saiyajin on his fathers side. Goten and Trunks were best friends all of their lifes, Trunks only a year older than Goten. Trunks and Goten as children were the same power level and could power to the same power level and use a techinque called Fusion-HA and fuse together into Gotenks. Goten is 27 in Dragonball GT. He also is dating a cute native county girl in Dragonball GT called Paresu (Paris).