Dracula's Castle, featured in the opening titles and through flashbacks, bears an uncanny resemblance to the castle Dracula calls home throughout the Castlevania television and video game series.
The movie included elements from Elseworlds tale Batman & Dracula: Red Rain, such as Dracula and his minions' vampiric designs and a Vampire Batman (who appears in Bruce's nightmare). A bat crashes through the window (which serves as Bruce's inspiration to be Batman), only the bat lies dead in Bruce's nightmare.
Dracula introducing himself as "Alucard" ("Dracula" spelled backwards) was also used by Lon Chaney, Jr. in the title role in "Son of Dracula."
One of Batman's earliest villains was a vampire called The Monk, who also targeted Bruce's love interest of that time (Julie Madison).
This animated film was released in 2005, the same year of the live action film "Batman Begins."