The Saiyans are an alien warrior race who have appeared as antagonists and other supporting characters throughout the Dragon Ball franchise specifically being the main antagonists of Raditz and Saiyan Sagas, the villainous protagonists of Dragon Ball Z Special: Bardock the Father of Goku, the main antagonists of Dragon Ball Z: Broly the Legendary Super Saiyan and the main protagonists of the rest of Dragon Ball Z, Dragon Ball Super and Dragon Ball GT.
They are a humanoid race almost completely human-like with a warlike culture who worked as soldiers for the Galactic Frieza Army until Frieza, who feared them becoming more powerful than him, wiped them out by obliterating their homeworld Planet Vegeta. Before this, they gleefully worked for the tyrant; wiping out entire populations, so the organization could sell them to the higher bidder.
Originating from Planet Sadala, the Saiyans were an aggressive race who waged war with numerous planets. One of these planets was Planet Plant, which was populated by an alien race called the Tuffles. The Saiyans waged a ten-year long war with the Tuffle that eventually resulted in the complete genocide of the Tuffle species, allowing them to rename it "Planet Vegeta" in honor of their leader, King Vegeta, the Saiyans made it their new homeworld. Vegeta reveals in Dragon Ball Super that the planet Sadala it was destroyed by a fight between the Saiyans, this implies that the reason for the destruction of their home planet may have been;fighting for territory or they were simply fighting for fun.
The Saiyans were later hired following this by a mysterious alien race called the Arcosians, who provided had the Saiyans with advanced technology in exchange for them conquering planets for them.
At some point around this time, the Saiyans began working with the Galactic Frieza Army, who supplied them with advanced technology such as Battle Armor and Scouters in exchange for the Saiyans invading and conquering planets for them. However, Frieza began to take a closer notice of the Saiyans' immense power and feared that they might try to overthrow him. To prevent this possibility from occurring, Frieza had all of the Saiyans save for a select few gather onto Planet Vegeta and then blew it up with a giant Supernova Energy Ball. A single low-class Saiyan named Bardock discovered Frieza's plans and tried to stop him, but wound up being killed by the same Supernova that destroyed Planet Vegeta alongside any of Frieza's men caught in the crossfire.
This caused the race to be almost completely extinct, with only five Saiyans remaining who survived the explosion due to being off-planet; Vegeta and Tarble, King Vegeta's two sons, Vegeta's henchman Nappa, Bardock's son Raditz and Bardock's other son Kakarot, who had been sent to Earth prior to Planet Vegeta being blown up and who would later be renamed "Goku", eventually become the legendary Super Saiyan who would later fight Frieza to avenge his race and all the other people slain by the heartless tyrant.
To keep the remaining Saiyans working for him (Vegeta, Nappa and Raditz) under his thumb, Frieza lied to them and stated that Planet Vegeta had been destroyed by a meteor colliding with it, though the three would have suspicions about this telling of events. Eventfully on Planet Namek, Vegeta found out the truth and decided to kill Frieza for not only destroying his planet, but for using him. However, after Vegeta's death at the hands of Frieza in his final form, Goku ended up defeating the tyrant after a long-fought battle.
With the deaths of Raditz and Nappa, only Goku, Vegeta and Tarble were left. Vegeta and Goku would later settle on Earth and marry human wives, with whom they would have several half-Saiyan children with, allowing the race to survive through half-human children. Eventfully, they later found out that Universe 6, also has Saiyans who are mostly more peaceful than their Universe Seven counterparts.
- King Vegeta - Ruler of the Saiyans / Commander-In-Chief of the Saiyan Army.
- Vegeta - Prince of the Saiyans. Currently the KIng despite not acknowledging his title.
- Yamoshi - The first super saiyan and super saiyan god
- Cumber - The Legendary Evil Saiyan and the first legendary saiyan
- Kale - The Legendary saiyan of the universe 6
- Bardock's Elite
- Son Goku/Kakarot
- Broly- Possible Lower-Class
- Due to the species as a whole being originally violent psychos, anyone who survived the Saiyans attack on their species swore revenge and ended up becoming the Villains and not the Tragic Heroes. Since they choose to attack Earth, home to peaceful Goku, reformed Vegeta and their halfling offspring; which is what Dr. Lychee and Baby end up doing.
- Although Saiyans have a violent, destructive and sadistic personality,Goku, his children, his biological parents were shown to have a kind heart that genuinely cared about others,later on, Vegeta also became kinder compared to before, his sons and younger brother also do not possess the same cruel and bloodthirsty nature as the Saiyans. This implies that the Saiyans' cruel and violent personality is by own choice rather than natural.
Galactic Frieza Army