There's more than meets the eye in the case of Dexter Woods, but the biggest two things to know are that he's humble and open. Of course, he's also energetic, charming and discreet, but they're less prominent and often intertwined with being miserable as well.
His humbleness though, this is what he's often admired for. There are many times when friends count on this and his caring nature in times of need.

Nobody's perfect of course and Dexter has a range of flaws to deal with too. His narcissistic nature and instability are far from ideal and make things uncomfortable, to say the least.
Fortunately, his openness helps prevent most of these grievances.