Nail is kind of a dick!

[Piccolo Daimao]

Concerning the "dick move" of him protecting the Great Elder rather than helping Vegeta and the Earthlings against the Ginyu Force, I think you have to realize that he probably feels its his job to protect his parent who could've been killed by Freeza in his absence.

What good would protecting the Elder do, when they knew that his life was going to an end? Normally in these kind of situations, the elders die for the younger generation.
I understand the feelings that Nail would have had, and his reasons, but it's still a dick move to let the Earthlings (who had no obligation to help the Namekians at all, and sacrificed themselves) die due to him not being able to let go of his father (who actually didn't mind being sacrificed for his people, in fact, he sent Nail away).

I think it's just that he felt it was his moral duty or obligation to protect the Great Elder, no matter what. Sure, you could see it as a dick move, but I believe that he put the Great Elder's protection first and foremost over the Earthlings.

[Saiga]

Either Nail is a dick or incredibly stupid, he definitely should have waited for the black sky before telling Freeza.

Funnily enough, I've heard a very convincing argument as to whether Kami must either be a dick, stupid, or cowardly. I guess all Namekians must be like that. Huh.