IdN, which stands for International Designers' Network, is a publication for creative people on a mission to amplify and unify the design community. It is devoted to bringing designers from around the globe together to communicate with, learn from and inspire one another. 

From the team on this Character Design issue: 

Being attractive is a solid foundation for any character design, given that a good character should be memorable and allow viewers to make a connection with it. Most of our featured designers in this article shared similar thoughts on what makes a good character design, saying that their creation, whether in 2D or 3D, must first and foremost come alive, appear to be real and have a “soul”.

When called upon to come up with several or multiple characters, the challenge is to maintain each one’s uniqueness. When one character veers too close to the personality of another it is time to hit the re-set button, get a new pair of eyes and re-start the whole process.