Barrier

Barrier (バリア) is a commonly seen Battle Chip from the Mega Man Battle Network series and has appeared in most games. A Barrier absorbs the corresponding damage until a certain limit is reached (whence it simply disappears) (E.g. a 100Barrier will absorb 100 damage.)

In Mega Man Battle Network 3 onward they come mainly in three forms: Barrier, 100Barrier, and 200Barrier.

Mega Man Battle Network 4 however breaks this rule by introducing a more souped up Barrier version, the Giga Chip: BlakBarrier which absorbs damage till a threshold of 150 is reached, vanishes, afterwards regenerates 3.1 Seconds later.

The NaviCust has a 'FirstBarrier' from Battle Network 3 onwards which activates a Barrier at the start of a battle. The Barrier used replicates the effect of a normal "Barrier" Chip.