In earlier games there was alignment system for recruitment too . Yu usually only recruit demons from yur same alignment neutral can recruit both I thinkGood to know that any Demon developed from the fusion process is listed to be automatically bound to the master ' s will . I think later games dropped the alignment system because it would naturally just curve every player into the neutral path soley for the benefit of having every demon available to them . And extra note relating to alignment of the demons in the older games Having an Alignment seems to give them more individuality as well as it makes sense for them to reject the Protaganist of an opposite alignment . Adding onto that , there is the Loyalty system , which rewards commanding the demon to do what they enjoy over forcing them to say , heal when they want to attack . Imo it would be cool if Loyalty system came back near in the future , makes the Demons not so much as collectable Poke ' mon . Also , might be fun if we get a new SMT game similar to the oldstyle ones where the player is magicless and uses only Phys and Gun , while commanding demons .