What are the issues with creating an SCP inspired game?

I have an SCP OC and have been planning out on making a game inspired by him. It would be an RPG maker esque game and would include a lot of SCP's. I was wondering if anyone knew the legalities of adding SCP's to said game? I can go into detail in the description about the game and what SCP's would be added..but I was curious to know the legalities / do's and dont's about things as I was planning on adding a lot of SCP's found in the game "containment breach"