Batman: Caped Crusader: Dr. Harleen Quinzel / Harley Quinn (Season 2)

She’s a crazed psychiatrist who resents Gotham's elite & has a particular interest in Batman. She is a former friend of Barbara Gordon & developed a romantic attraction towards Renee Montoya in season 1. At some point between the two seasons, Harleen lived with Montoya in secret. When the Scarecrow begins subjecting students at Gotham University to his fear toxin, Quinzel begins to investigate the situation and briefly works with Batman to defeat him. Unwilling to put Montoya's career at risk, she turns herself in, keeping her time at Montoya's home a secret. Don’t particularly care for this version, she is a little too thick for my liking.