sentences:  Whatever his hat hides, Edd is self-conscious about it; Eddy frequently blackmails Edd by threatening to reveal the contents of his hat.Edd is also self-conscious about a significant gap in his front teeth, thanks to Eddy poking fun at it.He is the only one of the trio to be an only child, and his parents leave sticky notes around his house as a means of communicating with him.