Here's another one!
Plug Man
START: Now that I'm plugged up, I'm ready for action!
TAUNT: Losing a few wires there, robot?
VICTORY: I think your plug fell out!
DEFEAT: This outcome was way too shocking.

Ground Man
START: Time for you to take a dirt nap!
TAUNT: You look a little dizzy . Was there an earthquake?
VICTORY: I won by a landslide!
DEFEAT: Looks like I just got grounded.

Dynamo Man
START: Get away from me before I shock you!
TAUNT: I'm surprised you haven't ran away yet.
VICTORY: Looks like you were too cocky for your own good.
DEFEAT: Darn, now I need to recharge!

Commando Man
START: ARE YOU READY FOR ME, SOLDIER!
TAUNT: YOU'RE OUT OF SHAPE. GET OUT OF HERE!
VICTORY: GOOD! NOW DROP DOWN AND GIVE ME 20!
DEFEAT: YOU'RE DEFINETLY BATTLE-READY, THATS FOR SURE!

Burst Man
START: Oh, I would love to have a battle.
TAUNT: Would you like to go to a festival later?
VICTORY: Look like I burst your bubble there, pal.
DEFEAT: I guess this gives me time to make even better bombs!

Wave Man
START: Please get away before I get angry!
TAUNT: Did you bring sludge here?! Now it's on!
VICTORY: Looks I have good old peace and quiet here again.
DEFEAT: I should have trained my close-range more!

Cloud Man
START: It's a bit windy today!
TAUNT: I heard that it's going to rain today! I love rain!
VICTORY: Looks like I won by a breeze!
DEFEAT:I knew I should have stayed on the couch today!

Here are Sword Man's quotes.

Start: "Let's make this a fair fight, shall we?"
Taunt: "Nothing personal, but I have my orders."
Victory: "There will be no second chance for you."
Defeat: "Impressive..."

Also, Clown Man's.

Start: "This isn't a joking matter!"
Taunt: "Don't worry, Robot! This will be 'pun'!"
Victory: "The joke's on you now!"
Defeat: "See you in my dreams!"

And Mercury's.

Start: "Everything belongs to me!"
Taunt: "Doctor has paid for the use of my power!"
Victory: "I'm gettin' paid a lot of cash for this!"
Defeat: "My beautiful reward..."

Centaur Man
START: I've already bet that I would win this fight!
TAUNT: This fight is taking a lot out of me!
VICTORY: Hah, I never lose a bet.
DEFEAT: Man, now I'm going to have to think about this for days!

Flame Man
START: Prepare to be burned by the flames of Flame Man!
TAUNT: Have you seen any imported oil, by chance?
VICTORY: Hah, I didn't even need to refill my oil!
DEFEAT: Now I'll have to wait until my package comes around.

Time to polish off Mega Man 5 with Gravity Man...

Start: "I'm going to turn your entire world upside down!"
Taunt: "What's wrong? Has my gravity-switching made you dizzy?"
Victory: "It seems you didn't understand the gravity of the situation."
Defeat: "And yet the Earth does move..."

...Charge Man...

Start: "You don't want to ride on this train!"
Taunt: "I think I can, I think I can..."
Victory: "The pain train is pulling into the station!"
Defeat: "Whoops, I must have derailed..."

...and Star Man's quotes.

Start: "Here comes the superstar!"
Taunt: "Looking a little spaced out there, Robot!"
Victory: "I always knew I was the brightest star in the universe!"
Defeat: "There's always show business, I suppose..."

It's time for wolverine man... I mean slash man

START: How do you expect to catch up with me?!
TAUNT: After this fight, I could go for some carrots!
VICTORY: I told you that you would be too slow for me!
DEFEAT: Oh no, my nail broke! Now I'll grow it out again!

Venus

START: what,do you think I'm not busy or something?!
TAUNT: Walking left and right, it drives me crazy!
VICTORY: Now to wash my beautiful head! Ladeeda, ladeedo! ( singing in bathtub sounds)
DEFEAT: When I get home, I'm taking a bath or two!

Buster Rod G

START: You're not getting out of this, unless you have a banana!
TAUNT: Ugh, I'm tired of all this monkey business!
VICTORY: That's why I'm the leader of the Genesis Unit!
DEFEAT: But I am a master of the arts! How could this be?!

Tomahawk Man
START: Into battle, Tomahawk Man goes!
TAUNT: Tomahawk Man can hit target 300 feet away!
VICTORY: Tomahawk Man's victory is for clan!
DEFEAT: Tomahawk Man's destiny has been lied to!

Ballade
START: Feel the ultimate power, weaklings!
TAUNT: This is such a bore! You have no chance of winning!
VICTORY: I didn't even use my second form, too!
DEFEAT: You cheater! I am the strongest, not you!

Magma Man
START: Everything that calls me expired shall burn!
TAUNT: Is it getting too hot for you?!
VICTORY: Now to visit the hot spring!
DEFEAT: I guess they were right when they called me expired.

Jupiter
START: I'm the fastest in the universe!
TAUNT: Are you shocked by my amazing speed?!
VICTORY: I didn't even need those stupid bombs!
DEFEAT: These injuries... remind me of the bombs.

Uranus
START: Feel my strength, loser!
TAUNT: I JUST SAW RED! I HATE RED!
VICTORY: Yeah, this is what we call muscles!
DEFEAT: I think I ran too fast.

Saturn
START: You can't help but come closer to me!
TAUNT: Man, this is the most I've ever done something.
VICTORY: Now to grab me some fresh E-Tanks!
Defeat: My ring! You broke my beautiful ring!

Mars
START: Prepare to be turned into ashes!
TAUNT: Man, this would be going a lot easier if I could jump!
VICTORY: Now if only they let me fly on airplanes.
DEFEAT: I won't surrender! I rather be scrapped!

For Pluto, I like Spinstrike's quotes except for the last one. Since he is a cat, making a gripe about a hairball might seem more appropriate.
As a suggestion:
"*hack*Just wait until I get this *hack* hairball out!"

Hyper Storm H

START: Prepare for the power of the Genesis unit!
TAUNT: Did you just call me a pig?! It's on!
VICTORY: If you compliment me, I might give you mercy.
DEFEAT: Ugh, I knew I shouldn't have been gullible!

another version for Wave Man( use this one or the other one, whichever one you like )
START: Get away before I am angry!
TAUNT: Prepare for the next wave of my power!
VICTORY: Now to clean up the sludge.
DEFEAT: I think I wet my pants.

Snake Man( he repeats his s)
START: Once I sssssstart sssssomething, I don't give up.
TAUNT: I love hard prey to catch!
VICTORY: I never lose my prey, for I am the predator!
DEFEAT: Ugh, I feel like a sssssslug just got on me!

This is for the evil robot in mega man 8's opening( trying not to reveal the energy he uses)

START: Can you feel yourself being corrupted by it's power?
TAUNT: This energy shall spread across the universe.
VICTORY: You should have used it's power!
DEFEAT: This energy is unstoppable, even if I get destroyed!

Stone Man
START: Don't underestimate my strength!
TAUNT: After this, I could go for a oil drink!
VICTORY: My persistence never allows me to lose!
DEFEAT: Man, this reminds me of this part in a movie when...

It took me ages, but I finally came up with some quotes for Snake Man.

Start: "Try my Sssearch Sssnakesss on for sssize!"
Taunt: "Come out, come out, wherever you are..."
Victory: "It'sss foolisssh to run from me!"
Defeat: "Thisss isssn't over, Robot!"

In addition, here are quotes for Yamato Man...

Start: "It is an honor to face you, Robot."
Taunt: "For Doctor! Banzai!"
Victory: "At last, I have brought glory to my clan!"
Defeat: "I am nothing but a disgrace..."

...Blizzard Man...

Start: "Is it getting a bit chilly in here, or is that just me?"
Taunt: "Did I ever tell you about the time I won a gold medal at the Robot Olympics three years in a row?"
Victory: "Oh, Canada! Our home an native land!
Defeat: "I much prefer skiing to fighting, thank you very much."

...and Enker.

Start: "I'm ready for you, fool!"
Taunt: "Hit me with your best shot, I'll just bounce it right back!"
Victory: "Be true to yourself, Robot, and maybe you'll have a chance at beating me!"
Defeat: "How can this be? My Mirror Buster is impenetrable!"

This is a quote for Mercury
START: Just so you know, my boss called you stupid.
TAUNT: Mind if I take this? Thanks, loser!
VICTORY: I'm getting paid today! Thanks for losing,!
DEFEAT: You little, slime-ball! You made me lose my reward!


Yamato Man
START: Prepare for the spirit of Japan!
TAUNT: My honor will allow me to win against you!
VICTORY: The legend of Yamato Man continues!
DEFEAT: I have brought great shame to my family.

Time for Punk's quotes.

Start: "Put up your dukes, twerp! This'll be over quick..."
Taunt: "You call yourself a robot? More like a tin can!"
Victory: "Feel like calling your mommy yet, loser?"
Defeat: "Next time I see you, you're dead!"

Not to mention Burst Man's.

Start: “3, 2, 1…Kaboom!”
Taunt: "Hate to burst your bubble, but I'm pretty sure I'm going to win!"
Victory: "Now THAT was a fireworks display!”
Defeat: “The party’s over? Aw, man!”

It's getting hot in here because of solar man!
START: When life gives you weights, you work out!
TAUNT: I'm burning with youthful fire, thanks to my workout.
VICTORY: Now to continue my workout! One, two,three...
DEFEAT: I should have listened to Weather Man.

Junk's man's quotes are here!
START: It's time for spring cleaning and you're the garbage!
TAUNT: Once I'm done with you, you could be a nice hat!
VICTORY: Oh my, what a mess you made! I'll clean you up nice!
DEFEAT: Could you at least put my parts in the recycling bin?

Don't get cut by Sword Man!
START: Don't worry, I'll make this fair.
TAUNT: Sorry, but I've got orders from my master.
VICTORY: My, my what an incisive cut! Beautiful, even!
DEFEAT: It seems that you are the better.

Search Man's here somewhere!
START: Take this! My surprise attack!
TAUNT: Operation! Deadly fire!
VICTORY: We won? Yes, sir!
DEFEAT: Retreat! Retreat!

It's cold in here! I guess Frost Man has arrived!
START: YOU TINY! ME BIG!
TAUNT: BRAWN OVER BRANS! DUH, I MEAN BRAINS!
VICTORY: YOU MAKE NICE POPCICLE!
DEFEAT: MOMMY! DAT HURT!

Sheep Man is in the house for the 50th quote party!
START: Yawn! Is it time to fight already?
TAUNT: This is more boring than my job. Maybe, I could get a job sleeping.
VICTORY: Now to get back to bed. One, two, Zzzzzzz.
DEFEAT: Just let me sleep a few more minutes.

Pump man, it's your turn!
START: I'll wash you up real good!
TAUNT: Do you take a bath once a day or something? Disgusting!
VICTORY: I'll clean up your dirty parts, you germ infested monster!
TAUNT: Please clean me! This floor... so dirty!

I'm going to create a quote for someone unexpected! It's the purple versions of Bass, Proto Man, and Mega Man and maybe future robots! I did this to give them more personality.( I'll call them copy robots.)
START: I'm the perfect imitation! Some might call me better than the original!
TAUNT: Surprised by how similar I am to the original?
VICTORY: Seems I've copied the right robot!
DEFEAT: I lost only because I copied a weak, sorry excuse for a robot!

Also, if King is ever added to the game, here should be his quotes.
START: You dare challenge the king of all robots!
TAUNT: Since you are a robot, I'll allow you to join my army.
VICTORY: Checkmate! I won this round!
DEFEAT: Was my dream... just an illusion?

Here's quotes for Ballade's second form!
START: You wanted me to fight full power, right? Here you go!
TAUNT: If I wanted to, I could squash you right NOW!
VICTORY: Did I even need my second form?
DEFEAT: But! There was no way you could beat me!

Hrrrm. Looks like a lot's already been done—I'll have to get creative to make something new.

GRENADE-MAN:
Start: Say hello to my cute bombs!
Taunt: Is that all you've got?! Come on, hit me harder!
Victory: KABOOM! That was too easy!
Defeat: THAT FELT GOOD!

KNIGHT-MAN:
Start: I would gladly accept your challenge anytime.
Taunt: Your finest just isn't enough!
Victory: The honorable win once more!
Defeat: Curses...the scoundrel got me...

SHARK-MAN:
Start: Here I come! Feeding frenzy!
Taunt: Nothing will save you from these jaws of death!
Victory: You're nothing more than small fry.
Defeat: I bit off more than I could chew...

Here's Shield Man!(fan character time)

START: Come on, hit me with your best shot!
TAUNT: Is that really all you got?
VICTORY: You know what they say, a good defense is a good offense!
DEFEAT: Incredible! You managed to break my defense!

Number Man, here ya go!
START: One, two, Three! That's how long this fight will take!
TAUNT: I'm surprised you've lasted this long!
VICTORY: Lets add this to my victory list!
DEFEAT: But my calculations said that there was no way I could lose!

Blossom Woman, time to show!
START: This rose has finally bloomed!
TAUNT: Are you distracted by my amazing beauty?
VICTORY: Our fight was beautiful, but not as beautiful as me!
DEFEAT: How dare you! Do you know how long it took me to get ready?!

Laser Man, come on up!
START: Do you expect to actually beat me?
TAUNT: My lasers are really state of the art, aren't they?
VICTORY: Of course I won, my lasers can penetrate anything!
DEFEAT: I lost? No way, my lasers are.. oh, forget it!

Curses. I saw that they lacked mugshots on the Database page, so I fallaciously presumed that they were still not finalized. As for Shark-Man, he has an appearance in Mega Man 3 for the DOS (His Battle Network counterpart notwithstanding), so I would suppose he would be in the game, though he seems to be running with a fanmade master lineup rather than his DOS compatriots. Speaking of the more obscure Robot Masters, where are the RM&F2 Robots, and the Constellations from Rockman Strategy? Are there no plans to add them to the game? Heck, we don't even have Dark-Man (MM5) or Doc Robot on the database. I know balance is the primary concern, but if we're going to have Robot Masters, might as well have all of them.

Actually, while I'm ranting about that, let's give Dark-Man a try:
Start: Target shall be eliminated for the glory of Wily.
Taunt: Target's threat level is minimal.
Victory: Target neutralized. Victory for Dr. Wily!
Defeat: I have failed...please forgive me, Wily...

Shame the Prototype is still down. ): In the meantime, I'd like to make a few edits to my preexisting quotes.

Flash Man
Start: "Stop! In the name of Love!"
Taunt: "This'll be over in a flash!"
Victory: "How illuminating!"
Defeat: "My light is fading..."

Crash Man
Start: "I am the destroyer!"
Taunt: "I'll blow you to smithereens!"
Victory: "You hardly stood a chance!"
Defeat: "How did you...Inconceivable!"

Knight Man
Start: "Taste my steel, knave!"
Taunt: "Enough foolishness! Have at you!"
Victory: "Thou were a fool to think thy could win!"
Defeat: "Forsoth...I have fallen..."