First of all the word or term "fusion" means to join together to objects. ( or in this case) Dragonball Z Characters. In Dragonball Z many people have fused together to help in the fight against evil. combines the powers of two people and gives it an additional boost. There are many different ways to fuse and some are more complicated than others. Fusion can help alot in a tough battle, that just can't be won by your self.
The Fusion Dance
It’s a dance to fuse with another person! Goku learned this style of fusion during the seven years of inactivity between the end of the Cell Game and before Gohan's start at Orange Star High School. The fusers must be the same height, build, and power level. Any mistakes in performing the dance can cause defective fusions. This form of fusion only lasts for exactly 30 minutes, so after this time period the two fighters de-fuse into their own two beings. No fuse yet has been longer than 30 min. The Fusion dance is very easy, but complicated at the same time. The Fuser's must learn a simple dance, but keeping there powerlevels the same can be very hard for them. You don't wanna make a mistake or you could endup losing power .
Portara Fusion
The fusion technique of choice for Kai's, this technique is allegedly hundreds of times better than that of the "Fusion Dance". The two fighters that wish to fuse have to wear an earring, each having one in the opposite ear of the other fighter. After this is done, they can fuse into one being. This fusion was meant to be permanent, but unexpected conditions caused the break-up of the two fusers, for example when Vegetto (Goku & Vegeta) fused, they where eatin by Super Buu. They broke up inside for some reason.
Namekian Fusion
The way of fusing by the Namekians. This is when 2 Namekians fuse into one being. No special objects or performances are needed for this type of fusion. The fuser just has to place his hand on the person that he wishes to fuse with, and they just merge into one. There are no set time periods for this type of fusion, and the two fighters can de-fuse at any point of time. But that doesn't count if you join with someone who is linked to you by spiritual bonds. This fusion is the easyest of all, and is very simple compared to the other fusions.
DBZ TIMELINE
• Information: Dragon Ball Z: Timeline
Dragonball Z
761 A.D. October 12th Raditz arrives to retrieve his brother. Goku and Raditz are killed by Piccolo's Beam Cannon. Vegeta and Nappa stop at a small planet named Arlia. After finding the planet in unsuitable condition for sale, they destroy the planet. After this, they go into a state of suspended animation in a cold sleep. They're headed for the planet Earth. A period of several months Gohan begins his survival training. Gohan falls into ancient ruins and finds a robot. After a disaster, the robot is destroyed. Gohan becomes more mature. Yamcha is employed as a professional baseball player. Gohan becomes home sick and tries to escape from his training area and return home. After meeting Pigero and other orphans whose parents where killed in a tsunami, he regains his courage and returns to his training.
762 A.D. Some time in March. Krillin, Chiaotzu, Yamcha, Tien, and Yajirobe are training at Kami's Palace.
762 A.D. April 29th Goku arrives at King Kai's planet.
762 A.D. May 9th Goku finally catches Bubbles. His next training is to hit a cricket, Gregory, with an incredibly heavy hammer.
762 A.D. May 23rd Goku bops Gregory on the head with the hammer.
762 Some time in May. Krillin, Tien, Chiaotzu, and Yamcha make a spiritual travel to the old planet Vegeta. They are all easily killed by two weak Saiyan. When they return to their bodies, they all decide to continue training hard.
762 A.D. November 2nd Goku is ressurected after having completed his training under King Kai.
762 A.D. November 3rd Vegeta and Nappa arrive on Earth. Gohan, Piccolo, Tien, Krillin, Chiaotzu, and Krillin face off against the Saiyan. Nappa, Yamcha, Piccolo, Tien, and Chiaotzu are all killed. The battle between Goku and Vegeta ends in a draw. A micro-sized robot made to look like an insect is deployed by Dr. Gero to collect blood samples from the strongest fighters for use in the construction of Cell.
762 A.D. November 4th Goku, Krillin and Gohan are hospitalized in the East City Hospital.
762 A.D. November 7th Krillin and Gohan leave the hospital.
762 A.D. November 9th The reconstruction of Kami's spaceship is completed.
762 A.D. November 14th Bulma completes her lessons in the Namekian language. Gohan, Krillin, and Bulma leave for Namek.
762 A.D. November 21st Vegeta lands on Frieza Planet #79.
762 A.D. December 13th Vegeta's injuries are completely healed. He leaves immediatley for planet Namek.
762 A.D. December 18th Vegeta, Kiwi, Bulma, Krillin, and Gohan all land on Namek at about the same time. Goku leaves for Nameck. Dende takes Krillin to meet the Saichourou. Piccolo, Tien, Chiaotzu, and Yamcha arrive at King Kai's planet and begin their training there. Goku's spaceship gets trapped in the gravity of the star Alpha HZ. By using the Kamehameha he is able to escape a fiery demise.
762 A.D. December 19th Zarbon takes Vegeta's beaten body to Frieza's ship to heal him.
762 A.D. December 20th Vegeta fights Zarbon for the second time. He kills him. Krillin takes Gohan to meet the Saichourou. By Frieza's order, The Giniyu Force's mission to Yardrat is delayed. They leave for Namek.
762 A.D. December 23rd Goku completes his training under 100g gravity.
762 A.D. December 24th The Ginyu Force are destroyed. Piccolo is revived. Krillin is killed. Goku becomes the Legendary Super Saiyan and defeats Frieza. The planet Namek blows up.
763 A.D. May 3rd Krillin and Yamcha are revived by the Namekian Dragon Balls.
763 A.D. September 9th Tien and Chiaotzu are revived. The refugee Namekians are transported to New Namek by a wish to the Namekian Dragon Balls.
763 A.D. Sometime in October. After 5,000 years the Makyo-sei approaches Earth and Garlic Jr. is freed from his Dead Zone. But he is again defeated by Gohan and trapped for good in the Dead Zone since the Makyo-sei is destroyed.
Exact Date Unknown Cell arrives in Trunks' Time Machine and goes underground to absorb nutrients. Frieza's cyborg body is completed.
764 A.D. Some time in August. Trunks arrives. He kills Cybord Frieza and King Kold. Goku returns to Earth.
Unknown Dates, Vegeta undergoes gravity training to become a Super Saiyan. A relationship slowly developes between Vegeta and Bulma. Goku and Piccolo attend driving school to get their driver's licenses. Cooler arrives on Earth. He's defeated by Super Saiyan Goku.
766 A.D. Trunks is born.
767 A.D. Goten is born.
767 A.D. May 7th The 24th World Tournament takes place. Mr. Satan is the winner.
767 A.D. May 12th All of the Androids appear. Cell shows up later that day. Piccolo and Kami fuse. Piccolo is temporarily the strongest character. Goku suffers from his viral heart disease. The Cell of the present is destroyed along with Dr. Gero's underground lab by Krillin and Trunks.
767 A.D. May 15th Goku's heart disease is cured by the medicine Trunks brought from the future. Vegeta and Trunks enter the Room of Spirit and Time.
767 A.D. May 16th Cell reaches his second stage. Cell reaches his perfect form. Goku and Gohan enter the Room of Spirit and Time.
767 A.D. May 17th Cell announces the Cell Games to the entire World. Goku and Gohan exit the Room of Spirit and Time. Piccolo enters it.
767 A.D. May 18th Piccolo exits the Room of Spirit and Time, Vegeta enters it again. Gohan enters Lime's village and saves it from Barbon's evil intentions.
767 A.D. May 19th Goku and his family go for a picnic. At around noon, Cell single-handedly destroys the Royal Army. Dende becomes the new Kami. Vegeta exits the Room of Spirit and Time. Trunks enters.
767 A.D. May 20th Trunks exits the Room of Spirit and Time.
767 A.D. May 26th At 12 noon the Cell Games begins. Goku dies a second time by sacraficing himself to save the Earth. Gohan completely destroys Cell.
767 A.D. May 27th Goku's funeral. Trunks returns to his time.
767 A.D. Between May and June. Goku visits Grand Kai's planet and meets Grand Kai. Goku participates in the Afterlife Tournament which was planned in "honor" of North Kai's death. Goku fights Pikkon. He finds him to be similar to Piccolo by his fighting and training style. Chibi Trunks takes his first steps. A documentary is broadcast on TV covering the events of the life of the World Champion Mr. Satan.
768 A.D. Doll-taki is employed by Dr. Myuu. His task is to gather energy to awaken M2's greatest Machine Mutant, Ruudo. Doll-taki does his job well and gets to work on gathering energy on planet Ruudo.
770 A.D. Krillin and Android #18 get married.
771 A.D. Marron is born.
773 A.D. Supreme Kai and Kibito travel to Earth to search for the sphere in which Majin Buu is sealed.
774 A.D. March 28th Gohan finishes the first grade level at Orange Star High School.
774 A.D. April 7th There's a sighting of the Golden Haired Warrior in Satan City. Gohan begins the second grade level at Orange Star High School. He meets Videl. Gohan meets Bulma at 3 PM. She works on a transformation suit for him so he can disguise himself when fighting crime. She finishes at 5 PM. The Great Saiyaman appears for the first time!
774 A.D. April 8th Videl discovers that Gohan is the Great Saiyaman.
774 A.D. April 9th Gohan teaches Videl how to fly. South Kaioshin checks out Goku's training.
774 A.D. April 10th Vegeta finds out that Chibi Trunks is able to turn Super Saiyan.
774 A.D. April 20th Videl masters the flying technique.
774 A.D. May 7th The 25th World Tournament takes place. Goku returns to Earth for a single day to compete in the tournament. Majin Buu appears. Vegeta sacrafices his life trying to defeat him. Majin Buu kills Babidi. Due to turning Super Saiyan 3, Goku is forced to return to the after-life early. Gohan mistakenly frees Elder Supreme Kai from the Z Sword. Elder Supreme Kai begins the ceremony to upgrade Gohan's power.
774 A.D. May 8th Piccolo, Gotenks, and Gohan are absorbed by Majin Buu. Majin Buu kills almost every single person on Earth. Elder Supreme Kai gives Goku his life allowing him to return to Earth. Vegeta returns to Earth with the help of Uranai Baba. Majin Buu destroys the Earth. Porunga restores the Earth. Vegeta's life is restored when all of the good people who died are wished back to life. Goku destroys Majin Buu with the Super Spirit Bomb.
774 A.D. September 7th Shenron erases everyone's memories of Majin Buu.
778 A.D. May 7th The 26th World Tournament takes place. Mr. Satan is the winner. Majin Buu comes in second.
779 A.D. Pan is born to Gohan and Videl.
780 A.D. Bra is born to Vegeta and Bulma.
781 A.D. May 7th The 27th World Tournament takes place. Mr.Satan wins. Buu comes in second place.
784 A.D. May 7th The 28th World Tournament takes place. Goku leaves with Uubu to train him.
