Cut Man is easily angered due to his non-threatening appearance being pointed out.
Guts Man is clever, tricking Mega Man into being crushed by one of his blocks and refusing to help him up.
Ice Man is rightfully confident, often freezing his opponent's attacks and countering them. This happens twice, once against Mega Man in the first game arc, and once against Bubble Man in the sixth.
Fire Man is patient, but easily swayed when he knows he'll lose a battle.
Elec Man is not given much of a personality until The Sixth Mega Man Game arc, in which he begins mercifully against Drill Man, later calling in Toad Man to talk down to Drill Man.
Bomb Man is not given much of a personality.
He was sort of "new" to the whole bad guy thing.
Flash Man is described as being 'wussy'.
He was hyper active and continuously talks about his "precious"(sugar).
Metal Man is confident in battle and defensive/vengeful when his brother (Quick Man) is destroyed.
Unhappy with the amount of sexual puns he makes, but balances out with being rather clever.
Reasonable, eventually teaming up with Mega Man.
Confident at first, but reacts poorly to pain.
A ninja wannabe.
Blind to his innuendo.
He is gay.
He is dark, mysterious and talks about nonsense.
He thinks he's useless because he has no hands.
Hisses in speech, but nothing else major.
He smokes and is on drugs .
One of them is normal, but the other one is stupid, for example: he told Mega Man that they tell riddles, tells him their weakness, etc.
He says he's smarter than the others because he plays video games, eats Doritos and watches "Xena: Warrior Princess". Also, his power is not to freeze time, but he holds boring speeches which make it look like time slows down.
Often brings disco into battles, sometimes 'cheats'.
The only robot to have absolutely no quirks, therefore making him competent.
Often acts without thinking. Can speak Russian. Once again, blind to innuendo.
Old and senile.
Basically like Spark Man, but more of a crybaby. Likes interchanging 'drill' and 'screw'.
Acts like a pirate.
He has asthma and is depressed because he feels useless and ignored. Can be brave at times.
Acts like a movie star wannabe.
Loves the smell of himself in the morning.
Confident and knowledgeable.
Fearsome, cunning, and honorable.
Clairvoyant, but not above trickery.
Treacherous, tricking Mega Man into thinking he smokes. Also very powerful.
Co-conspirator in Stone Man's plan. Sadistic.
Foolish. (Bob didn't bother reprogramming him)
Acts like the plant from Little Shop of Horrors.
Against pollution and stereotypes, but throws in several cheap shots.
Honorable, but will kick an opponent when he is down (purely as defense for his brethren, of course).
Highly honorable, polite. Foolish in expecting his spear tip back from Mega Man.
Against being called a 'horsey'. Confused due to transgendering, but generally up front.
A tad philosophical, but very resourceful.
Given a stereotypical Middle Eastern personality. Loves oil and can speak Arabian.
Logical and down-to-earth. Speaks with a Canadian dialect.