The question the title poses. I am building the outline of a story, and I plan on introducing a total of eight characters relevant to the plot in the first ten chapters. I plan on introducing another in the eleventh, making a total of three main characters and six side characters. I would like a second opinion. Are characters being introduced too quickly to keep track of, or is it safe to introduce one or two more characters? On a side note, I would like an opinion on a name for a mercenary: Vincent Graves.