Negación

is the beam used by Hollows to rescue their comrades. Only the Gillian-class Menos have demonstrated the ability to use Negación.

Description
Negación are square beams which engulf the target in a towering beam of light which completely isolates them from the dimension they are currently in, making it impossible to harm them from the outside of the impenetrable pillar. The field draws those within the interior towards the Menos which created it.

All Gillian-class Menos can use Negación, though it has only been used if the target was outside of Hueco Mundo at the time (i.e. Soul Society, etc.). The technique is used only to aid their fellow Hollow or comrades, as shown during Kaname Tōsen, Gin Ichimaru, and Sōsuke Aizen's escape from Soul Society. In the course of this, Genryūsai Shigekuni Yamamoto stated the moment the beam of light surrounded them it was over, as they had gone beyond their reach, a fact known to anyone who had fought Gillian previously.