Rapidash is highly stubborn, and her attitude isn't the best either. She looks at herself as a good leader and is highly respected. Other tends to call her 'mean' as she doesn't take missions with low rewards.
She will quickly crush anything she looks at as competition.
Sceptile has extremely serious nature; and is the quiet type. He's overall mysterious and his personality is rather hidden.
He will easily pick on weaker teams as he is often stronger than them. However Feraligatr is unpredictable and will not say no to a challenge.
Hes looked upon as evil, because of his rather bashful nature. But he has never got as far as killing someone.
No I can't describe personalities very well.