Talia al Ghul (DC Animated Film Universe)

"I need to rebuild the League. Make it stronger, better. Come with me. You and I, together with Damian, would be invincible."

- Talia al Ghul

Talia al Ghul is the tetartagonist of the 2014 DC Animated Universe film, Son of Batman, a background character in its 2015 sequel Batman vs Robin, and later returned as the true main antagonist of the 2016 film, Batman: Bad Blood. She is the leader of the League of Assassins.

History
One night, years ago, Talia spent the night with Bruce Wayne and tricked him into being with her, which lead to her being pregnant with their son, Damian. Talia kept the child a secret from Batman and raised Damian in the ways of the League of Assassins.

When Damian was older, Talia, Damian, and Ra's were overseeing the training of the League until they were breached by a League of Assassins led by Ra's al Ghul's former henchman, Deathstroke. Talia led the defense of the League's base, then after the death of Ra's, brought her son to Batman for safety.

Deathstoke was eventually defeated and Talia departed to rebuild the League, leaving Damian with Batman.

However, after this, Talia has abandoned her morality and relinquished her compassion for both Damian and Bruce, seeing both primarily as tools to serve her purpose. Talia plots to use Bruce to use the new communication software of Wayne Enterprise to brainwash the various political leaders of the world. She recruits various villains to serve as her henchmen. Her efforts are ultimately thwarted by the "Bat-Family" and Talia is furious that she failed at both ambitions of controlling the world and having Bruce at her side, Talia retreats. She proceeds to escape on her jet, but is confronted inside by Onyx and counterattacks causing the jet to crash and leaving their fates unknown, although it is likely that Talia and Onyx perished in the explosion.

Personality
Originally, Talia was a loving woman who cared deeply for her father and son, wanting to protect Damian from Deathstroke and lamenting Ra's' death. She also held strong feelings towards Batman, often acting seductively in their first encounter and affectionately calling him "beloved." After taking up leadership as head of the League of Assassins, she displays a complete change in her personality. She now acts more coldly, killing Heretic upon hearing his grievances. This extends even towards those she once loved, as she willing brainwashes Bruce without remorse, claiming to have cleansed him of all the pain he's endured. Talia also displays coldness towards her own son, calling him a "bastard" and ordering Bruce to kill him with the claim that they could always make more children. Although Talia claims that her actions were an act of love for Bruce and Damian, Damian speculates that it was all about control for her, and that any love she had was gone.

Trivia

 * It is unknown what caused the drastic change in her personality, though it could be speculated that she forced the Mad Hatter to remove her emotions in an effort to become a better leader.
 * Another theory could be that exposure to the Lazarus pits warped her mind.