Because you like Tifa Lockhart in Final Fantasy Series
A great galactic bounty hunter, Samus Aran is not as good at expressing emotions. See them in Metroid.
Hank McCoy is a quintessential nerdy scientist but with a few rather unconventional physical attributes. See them in X-Men Series.
Peter Venkman's "research" projects are designed to get undergraduate students to sleep with him. Though it turns out he can bust ghosts. See them in Ghostbusters.
Stoic, cynical, and brilliant, Solid Snake was genetically engineered to be the perfect soldier. See them in Metal Gear Series.
Call her. Beep her. If anyone's in trouble, Kim Possible is there. See them in Kim Possible.
After figuring out how both the light and dark halves of his soul could co-exist, Jak is maturing into a real hero. See them in Jak and Daxter.
A monstrous pirate captain, Davy Jones is quite literally heartless. See them in Pirates of the Caribbean: the Curse of the Black Pearl.
Sarah Kerrigan is pretty much the Queen Bitch of the Universe. See them in StarCraft .
Tiana lives by a simple motto: "Fairy tales can come true. But you gotta make them happen, it all depends on you." See them in The Princess and the Frog.
With most of the people that Sango loved now gone, the only thing she wants is to kill the demon who destroyed her village. See them in Inuyasha.
A courageous boy robot, Mega Man is dedicated to achieving everlasting peace. See them in Mega Man.