Gollum
Gollum is a fictional character from J. R. R. Tolkien's legendarium. He was introduced in the 1937 fantasy novel "The Hobbit", and became an important character in its sequel, "The Lord of the Rings". Gollum was a Stoor Hobbit of the River-folk, who lived near the Gladden Fields. Originally known as Sméagol, he was corrupted by the One Ring and later named Gollum after his habit of making "a horrible swallowing noise in his throat".
Gohan
Gohan is introduced as the five year-old son of the series protagonist Goku, named after his adoptive great-grandfather. Described as well-mannered and reserved, Gohan's story begins following his abduction by the extraterrestrial Saiyan named Raditz, who is also his uncle. While Goku is pinned to the ground, Gohan's extreme distress explodes with the release of his dormant power, which allows him to injure Raditz. Piccolo then takes Gohan away following the fight and Goku's death, and trains him for the upcoming battle against the two other Saiyans, Vegeta and Nappa, though Piccolo is aware that training the son of his greatest enemy will be a risk. His tutelage under Piccolo forms a deep bond between the two characters, with Piccolo ultimately sacrificing himself to save Gohan during their fight with Nappa. After Vegeta's defeat, Gohan travels with Bulma and Krillin to planet Namek to use the Dragon Balls there, as the Dragon Balls on Earth had turned to stone due to the Earth's god Kami's death. After succeeding in gathering the Dragon Balls, Gohan and the others wish Piccolo back to life, causing Kami and the Dragon Balls to be returned. Gohan, along with Krillin and Vegeta, are then forced into an encounter with Frieza, who seeks the Dragon Balls for immortality. Shortly after the fight with Freeza begins, Krillin is impaled by one of Freeza's horns. Freeza stops Gohan as he tries to save Krillin, who has now been thrown into the ocean below, and he mocks him, saying it is pointless to try to save his friend since he and Vegeta are both about to die. Gohan is extremely angered by being unable to save Krillin and attacks Freeza without hesitation. He manages to knock Freeza into a small island below, and then he blasts him with a series of energy blasts before ending the attack with a "Masenko". Later on in the fight, as Piccolo is getting repeatedly blasted from Freeza, who is now in his third form, Gohan blasts Freeza with another "Masenko", and once again pushes him back with it. Freeza is able to send it back at Gohan without taking any damage, but he is once again shocked that a child could produce such an attack. Shortly after this, Freeza transforms into his original and most powerful form. Once he does this he immediately kills Dende, a young Namekian who had been secretly healing Gohan, Krillin, Piccolo and Vegeta. Gohan is outraged by this and unleashes all of his power against Freeza. However, he is unable to land even a single blow. After Goku transforms into a Super Saiyan and defeats Freeza, the planet Namek explodes and Goku escapes while Freeza is left with serious injuries, Freeza is found in space by his father (King Cold) and is turned into a cyborg. Gohan is shown to settle back into school life on Earth, waiting for Goku to return home from Namek.
After Trunks kills Freeza and his father King Cold then tells Goku about the Androids, Gohan goes into the wilderness with Goku and Piccolo to train for the upcoming threat. After Vegeta kills Android #19, Dr. Gero (Android #20) activate Androids #17 and #18, and Cell is discovered, Gohan enters the Room of Spirit and Time with Goku where they train for 1 year (1 day on earth, however in their case according to Mr. Popo, Goku and Gohan still had 3 hours left in the room, but they came out having finished their training earlier than expected). Gohan makes the jump to Super Saiyan while he is in the chamber and after they emerge, both Goku and Gohan retain the physical characteristics of a Super Saiyan without any of the drawbacks of its form (increased aggression, energy loss, etc.). After Goku initially fights Cell but realizes later that he cannot defeat him, Gohan is called to fight to the surprise of everyone else and Cell. During the fight, Gohan asks Cell to stop the Cell Games tournament and then he tells him about his power. Cell, instead of heeding Gohan's warning, attacks him in an effort to force Gohan to show his true power. Gohan holds his own for a while until Cell becomes impatient and bored. He releases Cell Juniors on the other fighters to provoke Gohan from attacking. After Android #16 is murdered by Cell, Gohan unleashes his rage and transforms into a Super Saiyan 2. Gohan easily defeats the Cell Juniors and proceeds to toy with Cell, now that he has a much greater power level. This backfires, however; he waits too long to finish Cell, who decides to self-destruct when transformed back to his semi-perfect form, as a last-ditch effort to destroy Gohan and the Earth. Goku, in an act of self-sacrifice, uses teleportation to take Cell to Kaio-sama's planet. Thinking Cell dead, the fighters lower their guard only to be surprised by a blast that kills Trunks. Cell returns, having regenerated from a single Cell that survived the blast, and also adopted the instant transmission technique. Right before Cell is about to finish Vegeta, Gohan intercedes which costs him the use of his left arm. As Cell charges up one final "Kamehameha" wave to finish the Earth, Gohan hears the voice of his father who gives him the resolve he needs to defeat Cell. They both launch large "Kamehameha" waves at each other, which initiates a power struggle. Cell is about to overcome Gohan when Vegeta uses his remaining energy to blast Cell, which distracts him for a moment. Gohan uses this moment to unleash all his fury into his attack, which causes it to overpower Cell's. It hits Cell full-force which disintegrates all his cells, finally killing him.