Hotsuma - Shinobi (PS2)
Even though I'd rather have played as Joe Musashi from the previous games, the design for Hotsuma in the PS2 Shinobi was still excellent. At the very least, I think he looks even more badass than Ryu from Ninja Gaiden.
Hibana - Nightshade
I like that Hibana essentially brought back the classic white and red style that Joe Musashi used, mixed with the "futuristic ninja" thing Hotsuma had going on.
Plus, she's hot.