Because you like Annie Hall in Annie Hall
Spyro the Dragon loves getting into trouble around the Dragon Realms. See them in Spyro the Dragon.
Years of being the less desirable Vargas sibling have given Romano quite an inferiority complex, as well as the temper to match. See them in Axis Powers Hetalia.
Emily Fields has been very guarded, careful of whom she trusts and reveals her secrets to. See them in Pretty Little Liars.
He's a get rich or die tryin' kind of raccoon. See them in Marvel Cinematic Universe.
Once a lonely hat maker, Sophie Hatter is now cleaning goo from bathtubs and cooking breakfast for the grumpiest wizard in all the land. See them in Howl's Moving Castle.
A courageous boy robot, Mega Man is dedicated to achieving everlasting peace. See them in Mega Man.
The only thing Albert Wesker cares about is turning himself into a God. See them in Resident Evil Series.
Maurice Moss is a dedicated IT guy who even talks like a computer. See them in The IT Crowd.
A devoted butler, Alfred Pennyworth is both a fiercely protective guardian and a lethal gunman. See them in Gotham.
Sephiroth wants nothing more than to seize the power of the Lifestream in order to become a god. See them in Final Fantasy Series.