Piccolo Fused's History
As Goku was forced to do after his noble death, Piccolo travels down the winding Snake Way to King Kai's Planet. There, he, Chiaotzu, Tien, and Yamcha all train under the watchful eye of King Kai. While it is unknown if he ever learned any of King Kai's secret techniques, Piccolo's power does increase so significantly that even Nail (a Warrior-type Namekian with a power level of 42,000) notes it as unbelievable.
On Namek, Gohan, Krillin, and Dende, a young Namekian who Krillin and Gohan had previously saved, gather the Namekian Dragon Balls and summon the Namekian Dragon, Porunga. Piccolo contacts Gohan (via King Kai's telepathy) and demands he be resurrected with the first wish, be sent to Namek to battle Frieza with the second, and then Gohan could do whatever with the last wish. Piccolo's reasoning was that if he is brought back, then the Earth Dragon Balls will immediately return alongside Kami, allowing for wishes to be made to bring back Tien, Chiaotzu and Yamcha.
Piccolo soon arrives on Namek at a random point, since Gohan did not specify where on Namek he should be sent to when he asked Dende to have Porunga grant the wishes. After recovering from the initial shock of seeing his strangely familiar homeland for the first time and feeling the suffering of his people, Piccolo heads in the direction of a large energy source, believing it to be Frieza.
During his flight, he passes over a dying Namekian, Nail, who was earlier easily mauled by Frieza. Piccolo drops down to inspect the crippled Namekian and they begin to converse. Nail offers Piccolo to join with him, as the option of merging with his counterpart Kami could not be realized here (nor did Piccolo even want to be one with him, at this point). At first, Piccolo refuses, but Nail explains that Piccolo will not lose his personality, he will only feel the power gained from the fusion. Piccolo reluctantly accepts, and after the fusion is complete, he is amazed by his awesome new power and rushes to Frieza's location.
When Piccolo arrives, he finds a battle in progress between Gohan, Krillin, and Vegeta (who had rebelled against Frieza), with Dende supporting them, against Frieza. He then takes on Frieza, with the doubt of Krillin and Vegeta, who is in his second form, alone and is able to go blow to blow with him, even without removing his weighted clothing. Vegeta became shocked to find that the Namekian that Nappa killed with ease mere months ago had become so powerful. After a brief exchange of blows, Frieza transforms into his third form and assaults Piccolo with a large barrage of invisible and virtually unavoidable shots, crippling the Namekian.
An angry Gohan intervenes and blasts Frieza with a Full Power Masenko, but Frieza knocks it back, and Piccolo uses the last of his strength to deflect the projectile with one of his own before it can hit the young Saiyan. Frieza then begins his final transformation into his true form, and Gohan uses the opportunity to take Piccolo to Dende, who has the ability to heal others completely. Piccolo quickly recovers, but he knows that he is even more thoroughly outclassed by Frieza's new form. Frieza begins his renewed attack with a single blast that kills Dende (having seen him healing Piccolo midway into his transformation), preventing the warriors from being healed again; Gohan, Krillin, and Piccolo respond with a joint assault, but Frieza seemingly effortlessly evades all of their attacks.
Piccolo is then reduced to the sidelines, watching as a strengthened Vegeta attacks and falls against Frieza, helpless to intervene. After Goku arrives, Gohan, Krillin, and Piccolo get out of his way, and after witnessing Vegeta's murder at the hands of Frieza, he watches Goku and Frieza duel from afar. (He also implies that he would like to fight Goku when it's over, though only for kicks.) Goku is soon overwhelmed by Frieza once he powers up to 50% of his power, nullifying even Goku's Kamehameha fired with a 20-fold Kaio-ken boosting his power, and, in desperation, attempts to use the Spirit Bomb. In order to buy Goku some time, Piccolo takes most of the remaining ki from Gohan and Krillin and jumps in to help, catching Frieza off-guard and kicking him in the head, giving Goku just enough time to finish the Spirit Bomb and launch it towards Frieza, seemingly killing him. Piccolo drags Goku's body out of the water, and meets up with Gohan and Krillin, celebrating.
Just as our heroes rejoice, Frieza towers above them revealing to still be alive, and shoots a powerful beam meant for Goku (in the anime only, for in the manga he intended to finish Piccolo and the others first all along, and as such aimed at him immediately), but Piccolo bravely takes the hit for his former rival and falls to the ground on the verge of death. After witnessing both Piccolo being heavily wounded, and Krillin being blown to pieces by Frieza, Goku finally had enough and unleashed his hidden Super Saiyan powers. Gohan carried Piccolo off of the battlefield as Goku and Frieza clashed on the dying Planet Namek, with the former emerging as the victor. Piccolo is healed by Dende (who had been wished back to life along with the rest of the people killed by Frieza and his men) after being sent to Earth by a wish made to Porunga.
When the Namekians find a planet suitable to be New Namek, Piccolo declines to travel with them, and he stays on Earth with Gohan to protect and watch over the boy. Piccolo does not desire the peaceful, therefore dull, life to be had on Namek and instead wishes to keep training in order to become more powerful.
