The Black Dragon charging up a GravityBomb.
GravityBomb (グラビトンボム , Gurabiton bomu, lit. Graviton Bomb?) is a Black Enemy Tech used by the Black Dragon in Chrono Cross. This tech enables the Black Dragon to charge up a bomb infused with dark energy, which he uses to inflict devastating damage upon all his foes.
The Black Dragon will start off by flapping his wings to soar into the air. While in mid-air, he will open his mouth, whereupon a purple-colored orb, alongside a couple of light specks, is charged up. A flash of blue light will engulf the screen momentarily, and when it dissipates, the camera shifts its focus to the foes, whereupon a huge orb of jet-black energy, littered with flashes of electricity, is observed to blow up.