Roderick and Madeline are different because one is a guy and the other one is a girl. Roderick and Madeline both look pale and sick. They’re also described as sick and sad. Roderick talks more than madeline. Both seem to be mentally ill. Madeline never speaks in the story. In short, they are creepy and weird.
Their descriptions are similar to the house because in the beggining of the story they describe the house as spooky. Even from the outside the narrator could tell that the house looked different from others. The trees sorrounding the house were ghast and dead. So they are similar because Roderick and Madeline look as dead as the house. It si a really weird story.
Gianluca Grazioso 