"I'll send you to the next world with this... TIMES ONE HUNDRED!!!"
100x Big Bang Kamehameha (100倍ビッグバンかめはめ波), also known as Full-Power Big Bang Kamehameha (全力ビッグバンかめはめ波) or Ultra Big Bang Kamehameha (ウルトラビッグバンかめはめ波) in Dragon Ball Heroes is a full-powered version of the Big Bang Kamehameha, used by Gogeta in his Super Saiyan 4 form.
To perform the technique, Gogeta puts his hands in front of him like the normal Big Bang Kamehameha, but charges it with much more power. Then, he fires a huge streaming energy wave at the opponent, inflicting a massive amount of damage. In Dragon Ball Heroes, it is performed differently, he puts his hands together creating a blue aura, then he stretches his hands on the side, expanding the whitish blue aura into a long beam, then turning it into a huge purple blue energy wave before putting in front of him, condensing and firing it.
Appearance in games
100x Big Bang Kamehameha first appeared as Super Saiyan 4 Gogeta's ultimate attack in Dragon Ball Z: Budokai 3 and has appeared in several video games since, Dragon Ball Z: Infinite World, the Budokai Tenkaichi series, Dragon Ball Heroes, and Dragon Ball: Xenoverse. In most games is capable of inflicting major damage to the stage of play. With a few exceptions to which map is being played, whenever Gogeta uses the 100x Big Bang Kamehameha, it completely changes the stage to Ruined Earth or Dying Namek.
In Dragon Ball Z: Ultimate Tenkaichi, the technique is called Full-Power Big Bang Kamehameha (全力ビッグバンかめはめ波) and has a reddish-orange color.
In Dragon Ball: Xenoverse, it appears under the name X 100 Big Bang Kamehameha and is Super Saiyan 4 Gogeta's Ultimate Skill. It can also be obtained by the Future Warrior as a reward in Parallel Quest 54: "Saiyan Warriors". In Xenoverse and Xenoverse 2, if the user is not locked-on to an opponent before preforming it then they will sweep the X 100 Big Bang Kamehameha behind them as they fire.
In Dragon Ball Heroes, it can be used by Goku, Gohan, Beat, and Gogeta.
"An ultimate Ki Wave! Switch off Lock-On to sweep from side to side as you fire."
— Dragon Ball Xenoverse 2 Skill description
In Dragon Ball Xenoverse 2, X 100 Big Bang Kamehameha returns as one of SSJ4 Gogeta's Ultimate Skills which can be obtained by the Future Warrior (Xenoverse 2) as a reward in Parallel Quest 100: "The Ultimate Rivalry". Alternatively, it can be obtained by purchasing it from the TP Medal Shop (open from Friday to Sunday) for 50 TP Medals.