There are in fact several ways to look at this. You don't need to just answer one person, you can talk about one person for each quality that represents you. For example, you can admire your grandfather for his courage to win over a disease; your teacher for his/her patients at teaching the toughest students; or a famous person for his/her outstanding trait.
This question is basically "what kind of person are you?" Since you're a 3-dimensional person, you can talk about multiple people and multiple traits.