no personality?! bullshit! lets start with mario, he does have personality you gotta look past the main games though, lets look at mario's game gallery he enjoys playing games with people and is shown to be polite if a bit impatient even when loosing not much changes. he is depected as a bit goofy in the mario superstar series but not an oaf and the times he does clown a bit it sometimes proves usefull like the times he drinks too much water and thats actually needed to pass some obsticals, thoughout the main games hes proven to be quite the determinator burns, stabs, even freaking magic only slows him down as long as hes got 1-ups he will keep trying stoping only when he physicaly can't anymore even then he;s not invincable hes been captured a few times like mario is missing or even the luigi's mansion series. so tell me again no personality, just because mario doesnt talk usually doesnt mean he has no personality,

now then lets look at bowser, a boastful somewhat arrogent king of the koopa's who for some reason wants peach. he's been shown to be very physicaly minded and short tempered. if an obstical is in his way he's likely to dislodge it by force, often times he misjudges situations and is shown to not be the brightest leading to times where he gets in trouble as a result, look at bowsers inside story where he gets fattened up or even the earlier mario series where you gotta jump over him to get the axe to send im down or even get him to break the floor to fall to his doom.. yet there are times bowser has had strokes of genius or just plain luck, like the time he kidnapped mario. annother thing hes not a complete bruiser, though not often shown the koopa king is capable of magic. despite his status as antaganist he is shown to not be pure evil (usually), as even he doesnt want to destroy the world normaly as there would be nothing left rule, and if we put bowser jr in the picture it shows a softer side of him at times, perhaps hinting some of his prior persona is a bit played up for some reason psych himself up maybe?

now then lets look at peach, miss toadstool isnt just a blitzed out of their mind cake despenser even though she does enjoy cooking and is shown to be quite capable when not used as a kiddnaping plot device shes not completly stupid/airheaded but rather the vibe i get from her is far too trusting instead and even when she is kidnapped she still manages to be helpful to mario in his quest at times and is shown to be cunning and make the best of a situation like the time she humored bowser jr in sunshine or in super princess peach shown to exploit the effects of the vibe sceptor and her own emotions and is shown in that game to be able to beat bowser with them once again showing her rescourcefullness as she took a powerset that rightfully could be veiwed as one big joke and again beat bowser and his goons

sorry about the rant,