'M3GAN' star Allison Williams wants the horror franchise to "keep going" with more sequels and spin-offs.The scary flick – which follows the murderous robot doll M3GAN – will be expanded on with its sequel 'M3GAN 2.0', and the 36-year-old actress has said she's happy to keep coming back to the franchise so long as the stories are "interesting".Speaking with Entertainment Weekly, Williams said: "Let's just keep going as long as they're interesting and each one has its own story to tell."As well as 'M3GAN 2.0' – which is slated to hit cinemas next year – the series is due to receive its first spin-off 'SOULM8TE', and Williams joked the series was slowly turning into the Marvel Cinematic Universe (MCU) thanks to its growing filmography.The actress – who is also serving as producer on 'M3GAN 2.0' – was asked what an Avengers-level threat...