As mostDragon Ballfans know , Gokuis a Saiyan who was born on Planet Vegeta and sent to Earth as a baby right before Lord Frieza ruin his entire home plate world and nearly wiped out the integral Saiyan backwash . However , once he got to Earth , his origin make even more tragic and it is all tied to his very first killing .

Goku was preface inDragon BallChapter 1 by Akira Toriyama . In this chapter , Goku is weave the forest alone , search for solid food and flaming wood , before returning to his home plate that was completely isolate from the rest of human society . It becomes immediately apparent that Goku lives there all alone , though readers soon memorize that Goku once lived there with his grandpa , Gohan , before he mysteriously croak sometime before this first chapter . Before Gohan was killed , however , hetrained Goku in martial artsas he was a world - class fighter in his own right wing . However , no amount of combat acquisition could have pull through Gohan from his white-haired fate – a death that left Goku confused and alone .

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InDragon BallChapter 21 , Goku , Bulma , Yamcha , Oolong , and Puar have been captured by the villainous Emperor Pilaf and his minions after they spoil his plan to use the vast power of the   Dragon Balls   in ordering to become the ruler of Earth . The squad of artifact hunters were locked in a steel cellular telephone with dense chicken feed above them as Pilaf ’s programme was to perform them using the heat from the Dominicus ( which would be magnified by the spyglass and heat the steel yap they were shut up in ) . At this point in meter , however , it was nighttime and the only thing that   came   through the glass roof was the light of the full lunation . As the squad sat and awaited their death , Goku commented on the moonand marvel if there were any monster near them that come out during a full moon . When Bulma calls him gaga , Goku defend his percentage point by saying his grandfather was kill by a monster during the last full moonlight , but he was n’t able to save him because he obviously slept through the whole thing .

As Goku was telling the history of how his grandfather was killed by a mysterious monster powered by the illumination of a full synodic month , he also add that he was never allowed to look at the moon when it was full for some understanding he did n’t quite empathise . enquire if there was any correlation , the gang inquire Goku if he looked at the moon the night his grandfather was kill . Goku said he did , and the entire team is send off into a panic at the thought thatGoku might actually be a werewolf - type monsterwho was , in fact , responsible for Gohan ’s death . Then , Goku looks at the full moon through the glass ceiling of their lethal prison cell and begins to transform into a Great Ape – a giant ape - comparable animal that grants any Saiyan who undergo the translation vast amounts of destructive tycoon – which confirm that Goku did accidentally vote out his grandfather . As one can opine , realizing that you were creditworthy for a bang one ’s dying is utterly heartrending — even if it is an accident .

Goku ’s first killing was when he wasin his big Ape form , mean he was n’t in mastery of himself when he killed Grandpa Gohan . Not only was Goku responsible for for killing the only someone in his life that he love – a maternal name who took Goku in as his own – but he does n’t even remember doing it , leaving him interview the events of that night and keep him from get any settlement on the exit of his gramps – makingGoku ’s firstDragon Ballkill a painfully tragic origin .

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Goku’s first kill explains his tragic origin.

Goku’s first kill explains his tragic origin.

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