The way to unlock robots has been asked, especially MM3 robots, has been asked a surprisingly high amount of times. Especially Mega Man 3 robots.
So, this guide is a full guide on how to unlock every robot, MM1-MM4, and things like Roll, Disco, and Rhythm.
1. The Mega Man 1, Mega Man 2, and Mega Man 4 Robot Masters.
I'm grouping these all together because they are all unlocked the same. For the MM1 Robot Masters, use only neutral type attacks (Buster Shot , Mega Buster, Mega Ball, and so on.) on the Robot Master of the stage. Metal Man, Hard Man, Fire Man, Bright Man, and so on are all unlocked with this method.
NOTE: It is ok to use elemental attacks on the mechas of the stage, but you cannot use elemental attacks on the actual robot master! NOTE 2:: The stage has to be the Chapter 2 Robot Master stages. The fusion stages don't work for unlocking them! This method is the same for the Chapter 2 of Dr. Wily, and Dr. Cossack.
2. Roll, Disco, and Rhythm
These three are unlocked the same way essentially, but with slight variation. For Roll, using Doctor Light, lose any battle. For new players I recommend going to Elec Man's stage with Mega Man only. For Disco, it is the same method, but with Doctor Wily, and you have to lose two battles. For Rhythm, it is the same method, but with Doctor Cossack, and you have to lose three battles. NOTE: The failed missions have to be different missions.
3. Mega Man, Bass, and Proto Man
These three are unlocked automatically with you unlocking each doctor. Start the game and you get Mega Man. Unlock Doctor Wily and you get Bass, and unlock Doctor Cossack and you get Proto Man.
4. Mega Man 3 Robots
These are the most complicated to unlock out of these.
So, first off you have to have unlocked Doctor Cossack (to do so, beat Chapter 3 in Doctor Wily, if you haven't already) From there, you have to go to a fusion battle that may have a Mega Man 3 robot. For an example, one with Wood Manmay have Snake Man there. If any Mega Man 3 robot does show up, then use the big old Scan button on them. This really is something you should do whenever there is a new robot, but none the less.
Now you have scanned them, you can buy their respective field from Kalinka's shop. Now that you have bought a MM3 field, go into the players tab, and replace one of the fields with a new MM3 field.
From there, you have to do the process you have done with the MM1, MM2, and MM4 robots.
Writing this all out really shows just how poorly thought out this is. Yikes. NOTE: Gemini Man will never appear in Fusion Battles due to his core. The only way to scan him is in the Bonus Fields and player battles!
Hope this helps!
FINAL NOTE:MM5 robots are not unlockable. Nor are MM6, MM7, and so on. When they are unlockable I will try to quickly get out a walk through for how to unlock them as quickly as possible.
How to unlock every (unlockable) robot Posted by ThatOneEnder on June 20th, 2018 at 10:10pm Viewed 149 Times
@Ninja : Good to hear that this helped. I really should have added the screenshots sooner, but none the less. (And I can successfully say this guide is complete as well. There is one or two things I may add in the future, such as how to unlock Alt Costumes, but in this current state this feels to me very finished.)
Posted on July 12th, 2018 at 4:43pmEdited on 2018/07/12 at 6:54pm
Posted 2018/07/12 at 4:43pmEdited 2018/07/12 at 6:54pm
Sorry that I'm kinda late for this, but while trying to get all of the stars, I found Needle Man, Shadow Man and Snake Man in both Cut Man, Skull Man and Wood Man's stage respectively. I don't have the ability to buy fields from Kalinka yet, but I did scan them both. When I can buy fields from her, will I get access to their stages immediately or will I have to find them again in Fusion battles?
EDIT: Nevermind. I finally unlocked the field feature and apparently, it does work, as Snake Man was the only bot from MM3 that I unlocked and scanned that wasn't also found in a fusion battle and scanned.