
Dave "Bulldog"
Rossi is the brother of another character, Cecelia
Rossi. He is older than she is but not wiser. Bulldog is a jock by nature and he excels at sports no matter what the sport is, but he struggles with his studies. He looks out for his sister and gets her out of trouble if she is being picked on in the school yard.
Sometimes though he joins in and sides with the other children picking on her because he is afraid of being an unpopular jock in school. It is something that he struggles with and sometimes it gets him in trouble with his parents. He has a good heart, but his actions sometimes get the better of him. So he tries to play the middle between being popular and protecting his little sister.
He is friends with Denny Keen, but he also sometimes picks on him because he things Denny should be a stronger person and not be so forgetful, worry some, and anxious. Bulldog doesn't realize though that Denny can't help it and doesn't know the real reason why he is like that. In spite of that, Bulldog is a loyal friend and joins Denny and his friends on their adventures.