Frost's History
Background
Frost is from Universe 6 and is born of the Frieza Race. He is the emperor of Universe 6.
According to the anime, Frost leads a peace-keeping force in order to "quell conflicts in Universe 6", though he was also the one to start the conflicts, after stopping his self-created wars he would go on to help children and war recovery efforts in order to trick people into thinking he is a hero, causing him to be awarded the "Universal Peace Prize" three times in recognition of his actions, he would then go on to gain ownership of the lands destroyed by war, thus increasing his control over the universe. One time, Frost fought alongside Cabba to stop space pirates on the planet Mayonnai, a group who in secret were part of an underground organization. It turned out, he was actually the leader of the pirates that he had stopped and it was a staged conflict. Another time, Frost encounters an evil-doer and unintentionally kills him while using his final form. Since then, Frost has tried to avoid using this form because he has trouble controlling his power.
Universe 6 Saga
Frost is selected by Vados to be part of Team Universe 6 to compete in the Tournament of Destroyers. Vados gets Frost to join his team by promising that if he wins, Champa will help Frost with his efforts of Galactic Peace. The day of the competition, Frost attends with the rest of his team: Hit, Cabba, Botamo, and Magetta. Before taking the exam that he is required to complete, Frost is watched by Goku and Vegeta, whom they believe to be Frieza. Upon hearing this, Frost glances at the two Saiyans. However, Frost doesn't pay too much attention. Frost sits down to begin the written exam required to participate in the tournament. After the ten minute time limit, he manages to pass the exam. He then watches the first match between Botamo and Universe 7's Goku.
Goku eventually beats Botamo by throwing him out of the ring. Frost is then told by Champa that he is the next combatant in the tournament. Before Frost and Goku begin their match, Frost and Goku wish each other good luck and shake each other's hands. As soon as the match is begun by the Referee, Frost rushes at Goku and they both start throwing blows at each other in rapid succession. They fight until Goku uppercuts Frost in the gut and kicks Frost to the ground. Goku thinks that Frost is trying to see what his true power is but Frost claims that he isn't. Goku suggests that Frost transforms into his final form, leaving Frost wondering how the Saiyan knew about his transformations. He learns that Goku fought someone similar to him, but requests not to speak about it. Frost then transforms into his "final form", which is known as his Assault Form.
Frost wants Goku's approval on the form and he gets the okay. Before they continue their match, Frost wants to know if his other has beaten him but Goku decides to leave it be so Frost assumes he didn't win. Frost in this transformation continues to fight on par with Goku. Frost fires a finger beam at Goku and it sends him crashing to the ground. However, Goku hops up and transforms into a Super Saiyan, which shocks Frost. As Goku immediately charges at Frost, Frost is terrified and transforms again into his true final form. In the anime he is completely outclassed by Super Saiyan Goku as he kept on taking punches from Goku but still could not land a punch on him. In the manga Frost manages to keep up with Goku without taking too much damage, though he remains at a disadvantage power-wise. Outmatched regardless, Frost suddenly delivers a strange punch towards Goku and using poison, leaves Goku weak and dizzy, leaving him unguarded and allowing Frost to kick Goku out of the ring, causing the Saiyan to lose. After his victory, Frost congratulates Goku for his time and raises Goku's hand.
His next match is against Piccolo. In the anime, Frost first charges towards Piccolo but Piccolo vanishes and moves above Frost where he starts to prepare his Special Beam Cannon. Frost then fires multiple Chaos Beams at Piccolo but Piccolo dodges all of them except for one which pierced his right leg, causing him to fall back on the ground. Piccolo then uses an advanced cloning technique and Frost spins around and fires Chaos Beams at the clones in order to deduce which is Piccolo. Frost quickly gets tired of doing so and uses an explosive wave to wipe out all of the clones. Frost then begins to swiftly punch Piccolo, but Piccolo swiftly blocks the punches. Piccolo gets driven back by the swift attacks. Frost knocks Piccolo back and just as Frost is about to finish him off, Piccolo extends his left arm and traps Frost. Frost is unable to move, and Piccolo tells him that once he's finished charging his Special Beam Cannon, he'll fire it at Frost. Frost however then uses his poison against Piccolo, causing him to become extremely weak and drowsy. He attempts to fire the Special Beam Cannon, but since he's so drowsy it misses, and hits the barrier instead. Frost then finishes the match with an energy blast through the chest. In the manga Frost attacks Piccolo with a barrage of energy waves, though the Namekian dodges them all even before removing his weighted clothing. The two then engage in a long range battle, with Frost firing energy waves and Piccolo using his Demon Hand. Feeling threatened by Piccolo, Frost quickly charges him and uses his poison in order to win the match.
As Frost is about to be announced the winner, Jaco noticed something is wrong and suggests to the referee that Frost was using poison to win his matches. The referee checks Frost's body and discovers a needle concealed in his right arm much to everyone's surprise including Champa and Cabba. In the anime Frost then tells everyone about his dark side that he has kept hidden from everyone else by playing the part of a hero and acting kindly. Everyone is shocked by this, and all of the bystanders then boo Frost. It was then revealed by Vados that Frost was not a good person, he was actually similar to Frieza, Frost also revealed his true personality by giving an evil smirk towards Champa. Champa gets angry but eventually calms down after talking to Vados and then tells Frost if he beat Vegeta, he would support Frost in his goals. The referee intends to have Frost disqualified, but Vegeta tells the referee to let him continue in the tournament as Vegeta wanted to beat Frost himself. The fight then begins, with both fighters confident in their abilities. In the manga after being found out Frost simply states to Champa that he used his poison because he felt that he would lose if he did not, and also wanted the matches over with since there was no prize money. Vegeta then decides that he will fight and defeat Frost himself. As the match begins, Frost charges at Vegeta but Vegeta knocks him out of the barrier in just a single blow after he transforms into a Super Saiyan and Frost loses on the count of a ring out. In the manga Frost attempts to instead fight Super Saiyan Vegeta fairly in hand-to-hand combat, and manages to block a few of his attacks; however, he is launched heavily out of the ring by Vegeta with a kiai, causing him to lose consciousness and for a stretcher to need to come and pick him up.
In the anime, after the match, Frost tries to escape in Champa's cube and steal all of the riches his team was promised to share with, and if he were to take the cube, not even the Gods of Destruction nor the Galactic Patrol would be able to chase him, but is confronted by Hit. Frost is curious if the assassin was sent by Champa or even by survivors from a planet he destroyed that paid him off to kill him. Frost is hit with a technique by Hit and then rays of light appear out of him, preventing him from escaping. Afterwards, he is then carried by back to the tournament grounds by Hit, where Frost sits with the rest of his team, slouched over with his eyes closed.
Universe 6 loses the tournament due to Hit not wanting the cube anymore because of his entertaining match with Goku, so he loses his match with Monaka on purpose. Frost's life is threatened by Champa because they embarrassed him. Before he could destroy them, Champa's attention has been turned to the tournament where Zeno is present. After Champa's encounter with Zeno, Frost is still currently asleep and he is taken home by Vados and Champa.
"Future" Trunks Saga
In the anime only, it is later revealed that Frost has become a fugitive in Universe 6, and despite the testimony from Cabba, he is on the run. Frost was also given a mention by Chi-Chi, who erroneously assumed that he was the one who hired Hit to come after Goku.
Universe Survival Saga
In the anime, Frost first appears while still a cloaked fugitive, living in the back-alleys of a rainy planet and hiding from the police. While living there, he is eventually approached by his old teammate Hit, who has come to recruit him for the Tournament of Power. Frost is initially very shocked, believing Hit has come to kill him, and seemingly accepts this as he believes he could never defeat the assassin. Nonetheless, he tries to defend himself using his poison needles, and when that fails, he attacks Hit with a quick flurry of attacks with his tail. Hit manages to dodge all of his attacks and catches Frost's tail, which also contained a needle. Frost sadly resigns himself to what he believes to be his impending death, but Hit instead informs the fugitive of the upcoming Tournament, and how Champa wants him to participate. He also compliments Frost on his improved prowess, commenting that his time on the run has made him a survivor, which would be a pivotal skill in the tournament, and admitting he actually had to get serious for a moment to dodge Frost's assault. Hit also adds that if Frost refuses, he will be killed on the spot. Glad to be given another chance at living, Frost accepts Hit's offer, and removes his poisoned needles when he is informed that cheating will amount to erasure on the spot.
At the stage, he bonds with Frieza - with the two noting how similar they are - and forms an alliance with him, in the manga Frost acknowledges that Frieza is his senior.
When the tournament began, in the anime Frost made his move by firing his Dirty Burst at an unknown opponent. In the manga he strangled Oregano with his tail and punched him repeatedly, noting that he would take down all of the smart mouthed fighters, he was then approached by Frieza, who stated that fighting was a pointless waste of stamina and that Frost should aim for the three Earthlings on Team Universe 7, as they were weaklings.
Afterwards, while Krillin is rejoicing in his victory after defeating Majora, he lands a surprise tail attack on the former, knocking him out of the tournament and managing to teleport away from a vengeful Android 18.
Frost, reminiscing what Champa said to him about not cheating before the tournament, comes out of hiding to do as he promised: disrupt Universe 7, humiliate them, and lead them to defeat without fail. Frost then spots Master Roshi and attacks him. While having some trouble with him at first, with Roshi using the Evil Containment Wave, Frost was lucky enough that he missed. While in shock that he underestimated the old man, he spots Vegeta, one of the strongest fighters of Universe 7. Torturing the now weakened Roshi, he shoots one of his Chaos Beams to Vegeta to get his attention. Knowing that he is no match for Vegeta, he summons Auta Magetta to his aid in order to defeat him. Working together to harm Vegeta, Roshi uses the Evil Containment Wave once more. Waiting for this very moment, Frost develops a new move in order to seal Vegeta. Torturing Roshi once more, Roshi actually manages to break Vegeta free, in which Vegeta transforms into Super Saiyan Blue. Seeing this, Frost immediately uses a ki smoke bomb and flees.
Frost later appears before Frieza and Gohan, after the former defeats Jimeze. Initially Champa believes that Frost is attempting to take on Frieza and screams at him not to, believing that he doesn't stand a chance against him. However Frost praises his "senpai's" performance and reveals his alliance with Frieza. In order to prove his loyalty, Frieza attacks Gohan, forcing him to use all his power while Frieza changes to his Golden form, seemingly winning against Gohan, and earning Frost's trust and praise at seeing his new form.
With Gohan laying on the ground, Frieza then teaches Frost how to power up to 100% Full Power and subsequently blasts him out of stage, after telling him not to trust anybody. After dropping out, Frieza reveals he always thought Frost was an amateur not actually worth joining forces with. Enraged at this, Frost attempts to fire a Chaos Beam attack at Frieza from the spectator bench and is erased on the spot by Zeno, who warns Champa to not to let it happen again, or the entirety of Universe 6 would get erased next time.
In the manga, when the Tournament begins Frost teams up with Frieza and is advised to take out the three bald men: Krillin, Tien Shinhan, Roshi. Frost then rushes at Krillin and easily kicks him out of the ring causing the first member of Universe 7 to fall. Tien and Master Roshi fight Frost but are overwhelmed. Tien fires his ultimate attack the full power Tri-Beam. However, Frost walks out unscathed and proceeds to knock Tien out of the ring. Frost is about to take out Master Roshi, but Goku steps in after Krillin's warning. Frieza tells Frost to get away though as he will deal with the Saiyans later. It is stated by Frieza that they will take turns. Frost will go first and then when he becomes tired Frieza will tag in. Afterward, Frost attacks Universe 9 and easily takes out Oregano with a ki blast. He begins to break up the teamwork shown by this Universe. Hyssop then begins to attack Frost and at first seems to overwhelm him, but Frost then manages to pick up Hyssop and Dragonthrow him into Roselle eliminating both of them from the tournament. Frost then eliminates Chappil with a single kick and eliminates Hop and Sorrel with multiple punches. At this point there are only four warriors left from Universe 9. Comfrey is the last warrior from Universe 9 to challenge Frost. He is Frost's greatest challenge yet. He states not to underestimate Universe 9 and he is beginning to win. Just when Comfrey thinks he has the upper hand, Frost eliminates him with a point-blank Explosive Wave. The Trio of Danger witnessing Frost's power and their lowering numbers retreat.
Frost returns to Frieza and tells him to tag in, but Frieza has other intentions in mind. He reveals that their team up was all a lie by grabbing Frost's throat into a choke hold. Frieza then says to never trust anyone and kicks Frost off the arena. Frost is sent to the stands but is not as angry as he was in the anime as he does not break the rules. Frost remains in the stands and does not say anything when Hit is eliminated.
Frost is later revived with his universe when Android 17 uses the Super Dragon Balls to resurrect all of the universes that were erased.