How does the film blend scooby doo and batman characters?

Happy Halloween, Scooby‑Doo! is a 2020 American animated direct‑to‑DVD comedy‑horror film and the thirty‑fourth entry in the Scooby‑Doo direct‑to‑video series. The movie’s plot, cast, and production details focus solely on the classic Scooby‑Doo gang and their usual supernatural‑mystery adventures. There is no mention of Batman or any DC Comics character appearing in the film, nor any crossover or blending of the two franchises. Therefore, the movie does not merge Scooby‑Doo characters with Batman.