Krillin

Krillin (クリリン, Kuririn) is a supporting protagonist in the Dragon Ball manga, and the anime series Dragon Ball, Dragon Ball Z, Dragon Ball GT and Dragon Ball Super.

Krillin had a brief rivalry with Goku when they first met and trained under Master Roshi, but they quickly became lifelong best friends.[9] One of the most powerful and talented Human martial artists on Earth, Krillin is courageous, a faithful ally and good-natured. He is a prominent Z Fighter, despite usually being overpowered by the major enemies. His short stature and baldness (with the exception of when he grows out his hair in the Majin Buu Saga onwards) aid him in his ability to provide comic relief during tense moments. During the latter half of Dragon Ball Z, he largely retires from fighting, opting to settle down with his family instead, becoming the husband of Android 18 and the father of Marron. However, he returns to his lifestyle as a warrior later on in Dragon Ball Super. He completely retires in Dragon Ball FM.

God of Destruction Beerus Saga
Sometime after the battle with Majin Buu, Krillin is in traffic with Android 18 and Marron heading towards Bulma's birthday party. They could've avoided traffic, but 18 took longer than expected on make-up. After being fed up with traffic, Krillin puts the car into a capsule and flies towards the cruise ship. On the way there, he sees Yamcha and Puar, then Tien Shinhan and Chiaotzu. At the party, Krillin asks Bulma how old she is and is suspected by Android 18 of not wanting the second place prize of the bingo tournament, a castle, though he insists otherwise. Following Beerus and Whis being introduced to him by Bulma, Krillin offers Beerus some Russian Takoyaki with wasabi or octopus, only to be confronted by Vegeta, later clapping for Beerus and saying his name with most of the other attendees. Krillin eats one of the takoyaki and runs around afterward with a flaming mouth, the result of the wasabi being too spicy and falls to the ground. When Beerus become enraged and decides to destroy the Earth, Krillin can only stand by as Piccolo, 18, and Vegeta are effortlessly defeated. He acts as a bystander during Goku and Beerus' battle, but at the end, Beerus falls asleep and leaves the Earth in peace.

Golden Frieza Saga
While Goku was working out at the field, Krillin came by to visit him. Krillin had thought Goku might have gone off to King Kai's to train again, so he is glad to find him there. Seeing that Goku is still set on continuing his training, Krillin reminisces about how the two of them used to train together under Master Roshi. But now, Goku has grown strong enough to be a match for even the God of Destruction Beerus. Curious to experience for himself just how strong Goku has become, Krillin asks Goku to hit him. After some persuading, Goku does, sending Krillin flying across the countryside and straight through a house or two. Goku teleports to try and catch him but misses, and Krillin crashes straight into a large boulder. Back at Goku's house, Android 18 treats Krillin's bruise. Krillin wanted to see if he made the right decision of retiring from martial artsand getting hit by Goku confirmed his decision. Krillin later becomes a police officer and was first seen chasing a pair of robbers until Bulma interferes and helps knock them out. Although he’s thankful for Bulma’s help, he gives her a ticket for speeding. Just then his phone rings. He and Bulma are summoned over to Gohan’s house to try and help deal with the situation of Chi-Chi kicking out Gohan and Mr. Satan for their seemingly reckless behavior with Pan, with Goku and Goten showing up at the same time too. Bulma promises to help calm Chi-Chi down if Krillin gets rid of her ticket. Krillin then whispers to Goku if he can search for Vegeta’s ki and teleport after him after Goku realizes that Vegeta is training on Beerus's planet and wants to join him, but sadly, Goku cannot sense Vegeta’s ki at all.

Four months later, when Krillin was busy at work, he got a phone call from Bulma saying that Frieza has come back to life and is approaching the Earth. He receives the Turtle School gi from 18 and she then shaves his hair. He then picks up Master Roshi and they meet up with Tien Shinhan, Gohan, and Piccolo to fight Frieza and his forces despite two of them having kids at home. Initially, Krillin was scared of so many and Frieza again. Sensing his fear and recognizing him, Frieza offers one of his planets to whomever kills Krillin. A large portion of the army goes after Krillin, who much to his shock manages to easily dodge them. Master Roshi tells Krillin his eyes can follow the most powerful being in the world, mentioning Cell, Buu and Beerus. Roshi tells him weaklings like these won't ever touch him. Roshi also tells him he is a student of the great Master Roshi meaning they can never beat him. Having his confidence restored, Krillin unleashes the Scatter Kamehameha, leveling all of the soldiers sent by Frieza to kill him. Krillin continues to assist and attempts to help out with Tagoma but is dropped along with the others. After getting back to his feet and after Gohan takes down Captain Ginyu Krillin and Piccolo attempt to go help Gohan with Frieza but are held back by Ginyu. He then watches the fight between Goku and Frieza and later Vegeta who steps in after Goku is taken out and Krillin uses the last Senzu Bean on Goku. After Frieza destroys the Earth, Krillin gets protected by Whis, along with the others, and mourns the death of his family. Whis undoes time for Goku to able to kill Frieza and send him back to Earth's Hell. He is later seen at a party, with the other Z fighters who participated in the fight.

Universe 6 Saga
Sometime after the battle with Golden Frieza, Krillin hears from No. 18 that Goku and co. are having a picnic in space. Krillin finds Goku to get confirmation. Krillin is informed what really is happening, a tournament against Universe 6. He then tags along with Goku and Vegeta to find the last two members on their team. The last two members for Team Universe 7 is Majin Buu, who Goku promises the Super Dragon Balls to, and Piccolo. On the day of the tournament, Whis transport the Dragon Team to Beerus' planet to pick up Beerus and their other teammate. Krillin and the Dragon Team are present throughout the entire tournament, seeing the matches.

In the manga, Krillin is bald during the Universe 6 Saga, while he had hair during the anime arc. Also in the manga, he appears to wear the green outfit he wore during the Battle of Gods arc.

"Future" Trunks Saga
Krillin helps Piccolo harvest Chi-Chi's lettuce farm as Goku leaves for Beerus' planet. Later, when Future Trunks arrives back from his timeline, Krillin and Piccolo both meet him and learn about the threat of Goku Black. Later, when he and Zamasu are defeated, Krillin is among the group saying goodbye to Future Trunks and Future Mai as they leave for a new timeline to live in. Later on, Krillin is in a battle with criminals and his arm is grazed by a bullet. Goku shows up and apprehends the criminals, wanting Krillin to train with him. Krillin says he gave up fighting, but 18 calls him a spineless weakling for having so much trouble against usual criminals. Krillin agrees to train with Goku and they head to Kame House for old time's sake. Goku is forced to wear a heavy-weighted Turtle suit and is banned from flying or going Super Saiyan, but even then he easily defeats Krillin in a quick sparring match. Master Roshi gives the two an opportunity to train by asking them to collect paradise plants on a remote island. The two do so and wander into the Forest of Terror, where illusions of many enemies of their past manifest and surround them. Krillin is incredibly afraid as he confronts his previous killers: Tambourine, Frieza, and Super Buu. Throughout the fight, Krillin is afraid and even at one point gives up and tries to escape. He then picks up the resolve to fight back and learns the secret about the illusions: they disappear when he suppresses his energy. Krillin regains his will to fight, unlocking his power back, and even helps Goku defeat the illusion of Super Shenron created by Fortuneteller Baba. Krillin, with his fighting spirit returned, vows to continue fighting for his sake and his family's as the two return the newly-grown paradise plant to Master Roshi. 18 shaves Krillin's head when he goes home. Krillin then trains with Goku again afterwards, still saying he's banned from turning Super Saiyan.

Universe Survival Saga
Along with the other Z fighters, Krillin participates in the Tournament of Power to save Universe 7 from destruction. Before deciding on Krillin Gohan was unsure if he should or not as Hercule mentioned he retired a long time ago. Goku and Gohan sit down and image train to determine Krillin's chances, with Gohan playing the role of Krillin and Goku playing the role of Basil. While able to hold his own for a time Krillin was ultimately killed during the image training with Gohan saying that would be Krillin's fate. Goku says Krillin will be fine and tells Gohan that Krillin has been training again and has all sorts of new crazy techniques. Trusting his father Gohan agrees. After Bulla's birth, Goku leaves to go and recruit Krillin and 18. Boyh refuse at first until Goku lies about there being a prize money. 18 is suspicious but Krillin is oblivious to the lie, and decides to test his full power first. Gohan comes by later and tests Krillin himself and later Goku fights Krillin at full power. After accepting the invitation for the Tournament of Power, Krillin haves a sparring match with 18, and with Marron cheering both of them on. Arriving at Capsule Corp. to leave for the tournament, Krillin is surprised to learn Master Roshi has been training to overcome his weakness to seduction but believes it is necessary if they want to win the prize money. Piccolo and Tien are confused by this and Gohan is forced to admit it was a lie, as well as the fact the universe will be erased if they lose. When Goku arrives, Krillin angrily condemns Goku for not only lying but bribing them with money all because Goku thought Krillin would be too scared to participate. Krillin considers dropping out but changes his mind when Beerus threatens to kill him and Bulma offers to pay everyone money for participating.

Krillin and the others listened on as Goku and Beerus were discussing adding a new 10th member, Krillin and the Universe 7 team were shocked when Goku suggested bringing Frieza back to life. After Goku returns to Capsule Corp. with Frieza, they are transported by Whis to the World of Void. When meeting the other fighters at the Tournament of Power, Krillin asks Master Roshi about his weakness for females and the Turtle Hermit assures him that it will no longer hinder him. Once the Battle Royal begins Krillin chooses to stay alongside Gohan, Piccolo, Tien Shinhan, and Master Roshi; They were soon surrounded by Lavender Botamo, and three other fighters - the Universe 7 team launched a combined assault (with Krillin firing his Destructo-Disk), but it did little to nothing against their opponents.

Supervillain Yamcha Saga
Krillin gets killed by Yamcha upon becoming Supervillain by a simple ki blast. He later gets revived and forgives Yamcha for what he had done.

Hell Gates Saga
Krillin fights against some of the villains that escaped Hell (Cui, Appule, Dodoria...), but he realises that he can no longer beat any of them and says he won't fight anymore because he is too weak.

Universe Survival Saga
Krillin along with the others who don't participate in the Tournament of Might is sitting on a bench and cheering for his friends from Universe 7.

Conspiracy and Survival Saga
He and the other Z Fighters later need to fight against Obscurio, Luminous and their angels for their survival, but he is defeated in one kick from an angel called Recks. Later, he lets Gohan absorb him and he defeats Saiko. Then he gets saved from the erasure by Zen-oh as Wolfy writes him off.