Eternal Turtle School of Martial Arts
From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
The first two known members of the Eternal Turtle School were Grandpa Son Gohan and Ox King. Other known students of the Eternal Turtle School included Son Goku, Kuririn, and Yamucha. The special moves which were taught to the students there were the Kamehameha and Jan-ken.
 Video games
Roshi had officially retired in Dragon Ball Online, though (the now presumably deceased) Kuririn had founded the New Turtle School after he had read Son Gohan's book "Groundbreaking Science". In-game, the Spiritualist class belonged the Human race and exceled in the use of spiritual energy rather than physical techniques. Spiritualists could obtain the status of Turtle Hermit through the New Turtle School or Crane Hermit through Tenshinhan's New Crane School. Kuririn had decided that the New Turtle School should put emphasis on teamwork. In the anime, Roshi had Goku and Kuririn work against one another.
Canon techniques of the Turtle Hermit master class are Kuririn's Scattering Bullet and Goku's Super Kamehameha, while all Spiritualists learn the Destructo Disk, Kamehameha, and even Yamucha's Spirit Ball. Dragon Ball Online's Martial Artist class builds warriors similar to both Goku and Yamucha from the early arcs of Dragon Ball, who were at the time students of Roshi. Martial Artist techniques are the Jan-ken and Rogafufu-ken (though this is not a technique of the Turtle School, only being used by the practioner Yamucha). They also obtain the Concentrated Kamehameha technique.
The graduates of Roshi's training often included the kanji for "Turtle" ("Kame") 亀 on their dogi. Characters related to Goku always seem to wear the Turtle School colors of orange and blue in homage to Goku yet do not wear the insignia. This is possibly a sign of respect for him or that the creator Akira Toriyama wished for the viewers to the visual likeness between him and his sons. First, his son Gohan is given a replica of Goku's gi in the early and later arcs of Dragon Ball Z, except that Gohan wears Piccolo's "demon" kanji rather than the Turtle School insignia during the Saiyan Saga. Had his father not abandoned the Turtle School's insignia, Gohan too would have worn it in his battle against Buu. Future Son Gohan also wears his father's colors (but with a replaced kanji) after his death, though it is worth noting that Future Gohan did not attend nor graduate from the Turtle School.
Goku's second son Goten also doesn't sport the Turtle School insignia despite wearing the Turtle School colors, and in adulthood (the last episodes of Dragon Ball Z), abandons the blue undershirt and keeps a similar kanji-less gi (in a similar fashion worn by Goku during his battle with Raditz). Neither of his sons have been students of Master Roshi, despite knowing the Kamehameha. This could be due to Goku and the other Z Warriors surpassing Master Roshi and taking it upon themselves to train the younger generation of warriors.
By the end of Dragon Ball Z, Goku has abandoned the orange and blue colors completely, however, Goku's granddaughter, Pan, wore an orange gi during the same period. In Neko Majin Z, Goku's disciple always wore his colors in the same fashion, yet wore a different symbol, "ne".
In Dragon Ball Online, the central cast of Dragon Ball Z had become famous through Gohan's book Groundbreaking Science. In 1000 Age, Humans still wear the Turtle School gi/colors (though it sometimes is personalized with black and orange, rather than blue and orange), but it is generally associated with the offensive melee class (Martial Artist) rather than Spiritualists, who become Turtle Hermits.
 Known students
- Ox King
- Grandpa Son Gohan
- Son Goku
- Tien - Never officially graduated.
- Chiaotzu - Never officially graduated.
- Launch - For a few episodes only. Trained only because Roshi wanted to see her in a more revealing outfit.
- Chichi - Never actually trained under Master Roshi but was taught the style from her father, the Ox King.
- In Dragon Ball Online, Spiritualist players may branch off to become Turtle Hermits.