Because you like The Spirit of the Puzzle in Yu-Gi-Oh!
Jenny Flint is a devoted wife and daring crime fighter, which is pretty unconventional for a Victorian maid. See them in Doctor Who.
Whether it's a fire or a pit of lions, there's almost no predicament that Violet Baudelaire can't get her and her siblings out of. See them in Lemony Snicket's A Series of Unfortunate Events.
A compassionate medical student, Martha Jones has found a Doctor she can really look up to. See them in Doctor Who.
Aldo Raine is in the killing Nazi business. And as he says, business is a-boomin'. See them in Inglourious Basterds.
Christine Daae has been secretely taking lessons from a phantom musician. It sounded less creepy in her head. See them in The Phantom of the Opera.
This power-hungry Time Lord calls himself the "master of all." Bonus: he has 13 lives. See them in Doctor Who.
Once a loving family man, James Heller is now dark, damaged, and hell-bent on getting revenge. See them in Prototype Series.
A devoted butler, Alfred Pennyworth is both a fiercely protective guardian and a lethal gunman. See them in Gotham.
If anyone can stay optimistic and friendly under harsh alien rule, it's Alyx Vance. See them in Half-Life 2.
Dutiful, composed, and aloof, Sun Bak is the fighting force behind her team of eight "sensates" who are telepathically linked. See them in Sense8.
Selfishly taking her father’s place to fight in the Imperial Army, Hua Mulan risks treason if they find out she isn’t who she says she is. See them in Mulan.