Spreader

Spreader, known as Spread Gun (スプレッドガン) in Japan, is a Battle Chip present in all games from the Mega Man Battle Network series. This chip, alongside a set of similar Battle Chips, act as an enhancement to the NetNavi's buster for one shot, spreading damage to adjacent panels.

No viruses drop any of the Battle Chips in this family that have no element, and in most games they cause 30 damage. Puffy and Shrimpy drop chips of the Aqua element, and Spikey of the Fire element.

Shotgun
Shotgun (ショットガン), known as Blaster in the English dub of the anime MegaMan NT Warrior, is a Battle Chip that fires a projectile straight forward and hits both the target and the square behind it. In the anime it fires several projectiles from the buster.

Bubbler

 * See Bubble Spread for the Bubbler chip in the first game.

Bubbler, known as Bubble Shot (バブルショット) in Japan, is a stronger, Aqua element version of Shotgun that can be obtained from Shrimpy.

Heat Shot
Heat Shot (ヒートショット) is a stronger, Fire element version of Shotgun that can be obtained from Spikey.

V-Gun
V-Gun (ブイガン) spreads in the two diagonal squares behind the target.

Bubble-V
Bubble-V (バブルブイ) is a stronger, Aqua element version of V-Gun.

Heat-V
Heat-V (ヒートブイ) is a stronger, Fire element version of V-Gun.

Side Gun
Side Gun (サイドガン) is a Battle Chip that only appeared in Mega Man Battle Network 3. Its shot spreads in the panels to the side of the target.

Bubble Side
Bubble Side (バブルサイド) is a stronger, Aqua element version of Side Gun.

Heat Side
Heat Side (ヒートサイド) is a stronger, Fire element version of Side Gun.

Cross Gun
Cross Gun (クロスガン) spreads in four diagonal squares, forming a cross.

Bubble Cross
Bubble Cross (バブルクロス) is a stronger, Aqua element version of Cross Gun.

Heat Cross
Heat Cross (ヒートクロス) is a stronger, Fire element version of Cross Gun.

Spreader
Spreader, known as Spread Gun (スプレッドガン) in Japan, is a Battle Chip that hits all panels around the target.

In Mega Man Battle Network 4 it has a Dark Chip named Dark Spread (ダークスプレッド) that causes 400 damage, but has negative side effects to the user.

In Mega Man Battle Network 6 Spreader appears as three Battle Chips with different attack power.

Bubble Spread
Bubble Spread (バブルスプレッド), named Bubbler in the English version of the first Mega Man Battle Network game, is an Aqua element version of Spreader.

Heat Spread
Heat Spread (ヒートスプレッド), named Heater in the English version of the first Mega Man Battle Network game, is a Fire element version of Spreader.

3-Way
3-Way (3ウエイ) is a Battle Chip from Mega Man Network Transmission. Instead of a single shot splitting after hitting the target, it fires buster shots in three directions.

Program Advances
Powered Cannon:

Giant cannon that attacks like a spreader.

Damage:200

Battle Chips: Shotgun K, Cross gun K, Spreader K and Mega Cannon K

H-Burst (Hyper Burst)

Spreader attack that explodes multiple times after first impact.

Damage: 100

Battle Chips: 3 Spreaders with battle chips in alphabetical order.

M-Burst (Mega Death Burst)

Spreader attack that explodes a large amount of times after first impact.

Damage:100

Battle Chips: 5 Spreader Battle Chips in alphabetical order. (MMBN)

Heat Spread (HeatSprd)

Bubble Spread (BubSprd)