Created is a term used to describe any fictional character that has emerged into the real world.
Common traits and Characteristics
The common traits, for all of the Created is that, with the exception of Altair, none of them are au fait of the fact that they are considered to be fictional characters to the residents of the real world. In addition, even though certain characters, such as Alicetelia February and Selesia Yupitiria, have originated a world from a western fantasy setting, because their creators are Japanese then the Created are perfectly capable of fluently speaking Japanese when coming to the real world, specifically Japan. In addition, as explain in episode 7 by Yuya Mirokuji, while characters are emotionally bounded according to how the plot takes place, in their world, the Created are free from such constraints as they enter the real world where they begin to change.