Mega Man Network Transmission

Have a lot of GuardInvis, HighGuard, ShldGuard, and Guard chips. He has a shield. In order to do damage, you must hit him after he does a attack. The Guard and related chips will turn his attacks in to shock waves and send them at him. He will not reflect them. Do this numerous amount of times to defeat Bright Man.

Set Guts Man as your regular chip and use it five times. After that, use Hi-Cannon or M-Cannon when you can. Do this quickly without taking damage and you will get the Bright Man chip.
Thomas Guest.

Have Water attacks and plenty of Swords. First, weaken him with Aqua attacks. Next, use a Sword attack. The moment you use it, jump backwards and dodge his body flame. Do this rapidly and win the battle 2 by 4.

First, destroy a lot of viruses in Lan's computer. Jack in and out several times until you have 3,000 Zenny. Go to Higsbie's store and buy at least two AquaSwrds (three recommended).
Kyle Depaul.

While on your way to the Zero Account, you will discover many tough enemies, including Gravity Man. This Navi can be very difficult to defeat. Make sure that you have at least a few Half Energy Subchips (useful when low on health). Also, make sure to have a lot of projectile weapons, such as Cannon, Hi Cannon, Shotgun, etc. When you begin to fight him, you will find that his main weapon are energy balls. To dodge these, jump up and down. You will switch between standing on the ceiling and ground. Then, when the time is correct, use a projectile weapon. If your health gets low, use a Half Energy.

Have Roll, Vgun, Shotgun, and Cannons. First use Roll, then let him attack. Dodge it, then use any Shotgun, Vgun, or Cannons. When he attacks again, dodge it then attack. Do this rapidly to win and get the battle chip Gutspunch.

Max out your Dash Attack chips (10). Use them on him when he is on the ground.
will steen and MMBICKER.

Ice Man is a water type Navi. Buy three Electric Blades and use them on Ice Man. If you miss one, you are out of luck. To be safe, buy more than three.

Use the Dynawave, as it will get rid of the aura. Hit him, but be careful as it can get blocked by the Ice and Wood attacks. Depending on the attack, change your armor since the Life Virus attacks with elements. The Protoman, M Cannon, and Color Man chips help. Use Projectile chips on the second form, and if you get hit by a bubble it drops use the Energy sub chips (which you should have) and slide under it when it gets close.

Needle Man is a wood type Navi. Use all kinds of swords and blades on him. Fire causes the most damage to him.

Have an MP count of at least 200 and set the DropDown chip as your regular chip, which you can find in Zero Account. Use the chip immediately and shoot Protoman with your Megabuster (which should be fully upgraded by now). Do not charge your gun too often, and rely more on the single shot blasts. Use DropDown again if it wears off. Use MP charges if you run out of MP and try to get a full stock of DropDown.

First, at the school go against the green turnstiles with Elecman Navi chips and use those to delete the Ghost virus that appears. Get five of the Invisi3 chips. Then when fighting Proto Man, have all five Invisi3 chips, Invisi1 o r2 and a fully upgraded Buster. Turn on Invisi3 and keep firing your Buster non stop. When the invincibility wears off, turn it on again and you should be able to win easily.
Zero Account.

When Sword Man is just standing there, fight with Sword chips. It will good damage, or if you do the P.A. with Ice, Fire, and Electric Sword it will do more damage. Watch out tor his swords. They will spin around for a moment, then come at you. Try to dodge them. Also watch out, as he gets up in the air. He will hover around wherever you go. He will come down quickly and do a shockwave while on the ground. Jump when he does this.

If you wish to have more than just one Nav Chipi, go to the Net Battle Simulator. Battle any Navi you wish to have. However, in order to get that Navi you cannot use a Navi Chip in battle. You can only use regular Battle Chips and Restore Chips. Also, you must defeat the Navi quickly. This works best with Fire Man, Guts Man, Ice Man, and Color Man. It is difficult to get other chips because some of the Bosses take too long to defeat.