Doctor Strange-director Scott Derrickson, while answering a fan's question on whether he would like to direct the Justice League Dark movie, said he wishes to do a solo film on Constantine, a popular DC comics character. 

Constantine is an occult witch who can communicate with angels and demons. A film was made back in 2005, based on the character, with Keanu Reeves playing the lead role. 

Earlier, Scott Derrickson left the sequel of Doctor Strange as director due to creative differences, but he is still one of the executive producers for the sequel titled Doctor Strange In The Multiverse Madness.