Danny is Jake Barns friend. In Nothing to Fear he was at Whit's End when Jake brought his mouse Luthor and helped to look for Luthor when Shirley Zigler dropped him out of panic. The next day Jake was able to coerce Danny into helping him with a prank they pulled on Shirley. Later he distracted Connie Kendall by turning the trains on high. Whit later mentioned that he and Jake were in trouble and would probably be grounded.
Any family he may have is unknown.
|“||Jake Barns: Danny, maybe you should tell Connie about this table.
Jake Barns: The table, tell Connie that it wobbles.
Danny: It does? Oh, yes, it does! Doesn't it?
|“||Danny: Connie, I think you've better have a look at this table.
Connie Kendall: Why, what's wrong with it?
Danny: It's wobbly. I don't think it's safe for children my age.
Connie Kendall: You don't think it's safe? What are you going to do, drive it home? You know, I really worry about you kids sometimes.