How many movies have Sam Register and Scarlet Sookyung Kim collaborated on?

They have worked on 2 movies together! Their first movie together was DC Super Hero Girls: Hero of the Year (2016) while their highest rated movie together was Scooby-Doo! and Krypto, Too! (2023). They have not worked together since Scooby-Doo! and Krypto, Too! (2023).