How many movies have David M. Cowan and David S. Karoll collaborated on?

They have worked on 2 movies together! Their first movie together was Trick or Treat Scooby-Doo! (2022) while their highest rated movie together was Mortal Kombat Legends: Snow Blind (2022). They have not worked together since Mortal Kombat Legends: Snow Blind (2022).