Harry should sound kind and mid to low (but not too deep) voice. 

Harry is Ember's supportive, neighborhood friend and he stays friends with her even though she is hot tempered.  He usually stands up for her but also keeps her in check when she goes too far. He has an ice cream addiction so he always gives Ember some ice cream to cool down. He also quickly befriends Aspen.  Harry is kind but also a bit of an airhead.  But the question is how does he feel towards Ember?