Davis has had his Iron Man figure since he was a child, and he tells Aza that it's the only physical thing in the world that he truly loves. Iron Man represents how Davis sees himself in the world, particularly in relation to his father and money. Though Iron Man the superhero is powerful and strong, the action figure is only a representation in colored plastic of that strength. Davis feels the same way. Others see that he has access, power, and privilege because of his family's money: they see him as an actual Iron Man who can do and have whatever he wants. In reality, however, Davis feels as powerless as his Iron Man action figure to actually harness any of his material wealth or power, particularly since Mr. Pickett leaves Davis out of his will, denying him the power of the family money. Further, the Iron Man figure's decals and paint have worn off, making it so Iron Man is faceless and featureless. This symbolizes how others see Davis as not an individual person, but just in terms of his money.
Iron Man Quotes in Turtles All the Way Down
He's, just... I guess at some point, you realize that whoever takes care of you is just a person, and that they have no superpowers and can't actually protect you from getting hurt. Which is one thing. But Noah is starting to understand that maybe the person he thought was a superhero turns out sort of to be the villain.