Giga Freeze

History
The Giga Freeze was a hindrance program designed to freeze Alpha in the event the Guardian was destroyed. It was designed by Dr. Urakawa. He was there when they blamed Bass for causing all the devices connected to Alpha to malfunction. One danger of using it was that if it was misused, it could freeze the Net forever. So they hid it in the Undernet, under the protection of Serenade. So, only the Navis who pass the Undernet Rankings could gain access to the Giga Freeze, which Serenade called "The Forbidden Program." MegaMan goes to the UnderNet in search of it and when he defeats Undernet 2, he goes to Serenade who offers him the Giga freeze if he can pass the trial. If he failed, he would be frozen forever. But MegaMan passed and left with Giga Freeze Ability. SErenade mentions another who also mastered the Giga Freeze. Later when MegaMan tries to use the Giga Freeze on Bass, it fails because BAss,eXE who also mastered it was immune.

Mega Man ZX Advent
The Giga Freeze is a move used by A-Trans Bifrost. It is not shown on the Profile screen as it is a secret move that many players will have trouble utilizing to its full advantage.