Oh, you're right. I had noticed that once before, but completely forgot about it. The first one is, in fact, his intro pose. The only intro pose he's ever had.
The first one is the same animation as his 22F+P+K taunts in both DOA2U and DOA4, but the accompanying dialogue is new.
The second one was never used before.
The third one is the same as his "you amuse me" victory pose from DOA2U and his "I know no mercy" victory pose from DOA4, but the accompanying dialogue is new. Also, the animation is flipped, so that he extends his right arm forward, rather than his left.
