The Attack Node, also known as the Attacker, Attack Sys, Attack Sys, or Attack Node, is an enemy from Final Fantasy IV that appears alongside CPU and Defense Node in the Tower of Babil. In the original game, it attacks using a weak group attack that is a nuisance, but ultimately is not a large threat.
The CPU uses Globe199 twice when both the Defense and Attack Nodes are taken out, killing two party members. The player should not attack the Attack Node during battle and pick off the Defense Node, then the CPU, and then the Attack Node, using Rosa'sCuraga on every turn.
In the 3D version, Attack Node's Laser Barrage attack can easily deal in the high 2,800s, and will kill off most of the party in one or two hits, and thus the Attack Node must be the first enemy taken down. This can be achieved by Throwing a Knife at it and melee-attacking with everyone else.