-Attacks!

The Kamehameha is a technique created by Master Roshi. It is a huge blast,  which is charged up, and held behind the firer in cupped hands, then brought forward to release a large blast of energy. Goku later develops the ability to control the direction of the blast, shoot one from his feet, or with a single hand. He almost defeated Vegeta with this awesome attack, with the help of a little Kaioken. His son Gohan also learns to use this powerful move, as does Yamcha, Krillin, Tien, Goten, Cell, Cell Junior and Majin-Buu.

One of Goku's most powerful techniques, which he learned from King Kai while training in the “Next Dimension”. The Genki Dama (Or Goku's Spirit Bomb in English) is a large ball of energy gathered from every living life source in the local surroundings, which lend him their energy. However, the main weakness that this attack possesses is that it takes a lot of time to gather the energy for a Genki Dama. Whilst he sticks his arms up in the air, preparing to receive all of this energy, Goku is defenseless and open to attack.  

Taught to him by King Kai whilst training in the “Next Dimension”, this is primarily a power-up move. When Goku uses this technique, he flares up and gains a large boost to his speed and power. Goku can also use this as multiplied power to his Kaioken. At first, he shouldn't have been able to go past 2 x Kaioken without seriously endangering himself, as warned by King Kai, but eventually can increase the power of the Kaioken to around a 20 x Kaioken.

This is one of Goku's most popular techniques, one that essentially allows him to teleport to any place where he can sense KI. He learnt this whilst on Yardrat, after Namek had exploded. He uses this a lot in the series, and in films too, as it proves a useful ally to him. 

A huge bolt of incredible destructive power, used only by Vegeta. In fact it was one of the first attacks Vegeta developed as a Super Saiyan. He holds one palm flat, directs it out towards his enemy and then launches the devastating blast. It is the way that he finishes many opponents off.

This in my own personal opinion, is one of the most effective attacks in the whole DBZ series. It is a flat, disc-shaped energy blast, which can be used to slice through its target with deadly accuracy. Krillin was the first person to have ever possessed this incredible technique, and has the skill to control the destination of the attack as well. He would have killed the almighty Nappa, during the battle with the Saiyans on Earth, if it weren’t for Vegeta warning Nappa at the last moment not to touch it. Krillin also uses this attack to slice off Frieza’s tail during the battle on Namek. Many other DBZ characters like Vegeta, Frieza, Cell and Android 18 have their own variations of the “Destructo Disk”.