>>57539016>>57539026Sapphire's a wild girl who just has a lot of energy in general. She'll freak out and start barking over everything, even kisses!
>>57539050I don't remember anime Misty's personality that well, but I guess so? Add in childhood trauma
>>57538962and a savior complex and you might have Sapphire. Also despite appearances, Sapphire has a modest personality, she's written to be the nicer more humble foil to the arrogant selfish Ruby. Her emotional freak-outs aren't actually tied to an inflated sense of self-importance, she's literally just a wild girl who can't control herself sometimes.
In the manga story, she is compared to Pokemon a lot not just because she acts like an animal, but also because her heart is innocent and pure like a Pokemon's or something. Her kindness, even to people who treated her like she's stupid, is part of how she ultimately changes Ruby's heart, too.