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"In the Name of Piccolo Daimao."
Interesting take on the character. He has been shown, in the series, to dislike Goku and being proud of his father, but I don't really remember if they ever attributed a reason to that (in the manga, at least). I liked the part where he said he had been disappointed Goku wasn't a monster and that he gives off a reason as to why he's training Gohan.
Incidentally, Piccolo stops calling himself Daimao (at least, with pride) after he dies. Now, whether or not that was a result of sacrificing himself for Gohan or fusing with Nail is up to discussion, but I like to think it was the former. That, like he said in his speech, Gohan was the first person who showed him compassion and, as such, made him feel like a real person instead of a demon. That prompted him to stop relying on a useless title, his father's, and some useless revenge plan, and be his own person instead.