Command Codes

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Command Codes are input commands that can be performed with the buttons while using a BattleChip or Battle Card, typically powering up the attack or adding an additional effect. These commands are typically secret, rarely hinted at by characters in the game, and were revealed mainly in the official strategy guides.

In Mega Man Battle Network 5 and 6, a sound was given to Navi Chips confirming their input.

Mega Man Battle Network

Mega Man Battle Network 2

When using the chip, continue to hold the A Button and enter the command:

BattleChip	Command	Effect
BrnzFist	Hold A and Down, Down-right, Right	Shooting Fist
SilvFist	Right, Up, Left, Down, Right	Shooting Fist in all 3 rows.
GoldFist	B, Down, Down-right, Right, B	3 Shooting Fist in all rows.
VarSwrd	Down, Down-right, Right	Long Sword
	Up, Right, Down	Wide Sword
	Left, Down-left, Down, Down-right, Right	Fighter Sword
	Down, Left, Up, Right, Down	Life Sword
	Left, B, Right, B	3 Sonic Booms

Mega Man Battle Network 3

When using the chip, continue to hold the A Button and enter the command:

BattleChip	Command	Effect
GutPunch	Down, Down-right, Right	Rocket Guts Punch
GutStrgt	B, B, Down, Left, Right, B	3 Rocket Guts Punch
GutImpct	Left, B, Down, B, Down, B	Mega Dance, a 5-hit attack.
VarSwrd	Down, Down-right, Right	Long Sword
	Up, Right, Down	Wide Sword
	Left, Down-left, Down, Down-right, Right	Fighter Sword
	Down, Left, Up, Right, Down	Life Sword
	Left, B, Right, B	3 Sonic Booms
	B, B, Left, Down, Up	Elemental Sonic

Navi Chips

BattleChip	Effect
BeastMan series	During Wild Rush, Press A or B while a claw or BeastMan's head is on a panel to do an extra hit to that panel. Can be done multiple times on the same panel. Alternate A and B for better results. With frame-perfect timing, up to 14 hits can be done to a single enemy.
DesertMan series	Press Down + Right + A to send the upper Lion Head downward. Press Up + Right + A to send the lower Lion Head upward.
FlameMan series	Hold Up or Down on the D-pad to control the trajectory of the Flame Tower as it moves. Hold down B and press Up, Right, or Down to spread the Flame Tower in the two columns after the first one. Press Up to spread Flame Tower to the rows above FlameMan. Press Right to spread Flame Tower in the row that FlameMan is in. Press Down to spread Flame Tower to the rows below FlameMan. Pressing Up, Right, or Down once creates one Flame Tower and pressing twice creates two Flame Towers in that row, but pressing the same direction twice consecutively is not registered. For an easy full spread, simply hold B and rotate the D-pad.
MetalMan series	Before MetalMan attacks with Metal Fist, hold A and use the D-pad to move the target panel.
JapanMan series	While JapanMan is doing his Thousand Spear, quickly press A and B alternating, starting with A. Consecutive same button presses are not registered. After the initial 3 slashes, JapanMan will do 1 extra slash if 6 or 7 buttons were pressed, or 2 extra slashes if 8 or more buttons were pressed. Then, if 3 or more buttons were pressed during the extra slashes, JapanMan will tack on 1 extra hit before the final extending spear attack, for a maximum of 7 total hits.
Punk	Before obtaining Famous' Wristband: Mad Roller: Default move without Wristband. Mad Wave Roller: Activates when MegaMan’s HP is at 25%. Default move after obtaining Wristband. After obtaining Famous' Wristband: Shield & Chain: Before Punk attacks, press Left + B. Punk Chain: Hold your Charge Shot and position yourself on the middle of your back-most column, then use the chip. Double Go-Round: After performing the conditions for Punk Chain but before Punk attacks, press Down, Right, Down, Right.

Extra

• On a receiving Screen Dimming attack: Press Left at the moment of impact to halve damage from the attack.

Mega Man Battle Network 4

When using the chip, continue to hold the A Button and enter the command:

BattleChip	Command	Effect
VarSwrd	Down, Down-right, Right	Long Sword
	Up, Right, Down	Wide Sword
	Left, Down-left, Down, Down-right, Right	Fighter Sword
	Down, Left, Up, Right, Down	Life Sword
	Left, B, Right, B	Sonic Boom
NeoVari	Down, Right, Up	Cross Sword
	Left, Right, Left, B	Super Sonic
	Up, B, Down, B, Up, B	Double Life
Z Saver	After third slash, press Left + B	Super Sonic

Navi Chips

BattleChip	Effect
FireMan series	Before FireMan attacks, press Down, Right. FireMan will make Lava Panels with his Fire Arm.
SearchMan series	Press A + B when targeting to have Scope Gun destroy the target's held chips.
MetalMan series	Before MetalMan attacks with Metal Fist, hold A and use the D-pad to move the target panel.
WoodMan series	Press A + B + Down when WoodMan lands for an extra set of Woody Towers. This can be button mashed.
ShadeMan series	Before ShadeMan attacks, press to have Crush Noise: Paralyze: Down, Down-right, Right + A Confuse: Down, Down-left, Left + A
LaserManDS & LaserManSP	Hold A and press a direction for Power Down Laser: Up: (Brown laser) Reduce target's Buster Attack, Speed and Charge to 1. Down: (Green laser) Remove target's Super Armor, Air Shoes, Float Shoes, Undershirt, and any B+Left abilities. Left: (Yellow laser) Defaults target's Buster & Power Attack if they are in a Double Soul or have Mod Cards. Right: (Red laser) Reduce the opponent's Custom Screen chip slot by 1.

Mega Man Battle Network 5

When using the chip, continue to hold the A Button and enter the command:

BattleChip	Command	Effect
VarSwrd	Down, Down-right, Right	Long Sword
	Up, Right, Down	Wide Sword
	Left, Down-left, Down, Down-right, Right	Fighter Sword
	Down, Left, Up, Right, Down	Life Sword
	Left, B, Right, B	Sonic Boom
NeoVari	Down, Right, Up	Cross Sword
	Left, Right, Left, B	Super Sonic
	Up, B, Down, B, Up, B	Double Life
Z Saver	After third slash, press Left + B	Super Sonic

Navi Chips

BattleChip	Effect
GyroMan series	Hold L + R and GyroMan will focus his Gyro Air Force on only one enemy.
SearchMan series	Press A + B when targeting to have Snipe Gun destroy the target's held chips.
Colonel series	Before Colonel attacks, press Left + B to flip the direction of his Screen Divide.
ShadeMan series	Before ShadeMan attacks, press to have Crush Noise: Paralyze: Down, Down-right, Right + A Confuse: Down, Down-left, Left + A
LarkMan series	After LarkMan leaves the field, hold B and press Up, Right, Down for Lark Drive to instantly remove the target's barrier or aura.

Mega Man Battle Network 6

When using the chip, continue to hold the A Button and enter the command:

BattleChip	Command	Effect
VarSwrd	Down, Down-right, Right	Long Sword
	Up, Right, Down	Wide Sword
	Left, Down-left, Down, Down-right, Right	Fighter Sword
	Down, Left, Up, Right, Down	Life Sword
	Left, B, Right, B	Sonic Boom
NeoVari	Down, Right, Up	Cross Sword
	Left, Right, Left, B	Super Sonic
	Up, B, Down, B, Up, B	Double Life
Z Saver	After third slash, press Left + B	Super Sonic

Navi Chips

BattleChip	Effect
SlashMan series	When the Triple Edge kunais appear, hold B for them to auto-target.
(JP) Django series	While Django rides down, press L, L, L, A for him to do an sword attack after. The sword is not Sword element.

Card e-Reader Mod Cards

Mod Card	Effect
Mega Man Zero	For the Z Saber Power Attack: After the third slash, press Left + B for a Super Sonic.

Mega Man Network Transmission

VariableSword

Hold Y and press for:

Long Sword	Down, Down-right, Right
Wide Sword	Up, Right, Down
Life Sword	Down, Left, Up, Right, Down
Sonic Blade	Left, Right, Down-right, Down, Down-Left, Left
Sonic Boom	Left, Right, Left, Right, Left, Right

Mega Man Star Force

Mega Man Star Force 2

DoubleStone

Press a direction to change the placement of the Stones.

Mega Man Star Force 3

Double Stone

Press a direction to change the placement of the Stones.

Acid Ace

Press A ONCE during the first Lock-On Sword to perform a second slash.

Shark Attack

Press Up for sharks to attack in all rows.

Jack Corvus & Queen Virgo

If you have the other card in the Custom Screen, power is raised.

Wing Blade

Before Acid Ace attacks, press to use:

Lock-On Sword	L, L, R
Acid Laser	R, R, L