Grabity

Grabity, known as Hell Black (ヘルブラック) in Japan, is a black hole-like enemy with two cables, one green and other yellow. It is found in all three Mega Man Star Force games. Unlike others viruses, only sword type Battle Cards affect it, including Mega Cards (e.g. Wolf Woods). This virus will move on the same row as the player and has two attacks:
 * ???: Fires projectiles shaped like various planets down it's row. While it uses this attack its cables turn green.
 * ???: It will drain a large portion of Mega Man's health. Before it uses this attack its cables turns yellow. (Note: This attack will not inflict damage if the player has 1 HP)

Grabity family

 * Grabity
 * GrabityG
 * Grabotron (キラーブラック, Killer Black)
 * GrabotronG
 * Grabaklone (デビルブラック, Devil Black)
 * GrabakloneG

Battle Cards
Black Hole (ブラックホール) Battle Cards can be obtained from defeated Grabity viruses.