Team Spirit
To add to what WBS said, you can make this go by faster if you do this in a certain way, also a little less annoying by making a pattern.
First Make 10 teams (Just make the team names nothing else).
Once you made 10 teams, choose a logo for each team, then after all teams have a logo, choose a song, then choose 8 characters for each team. Doing each item in a team at the same time seemed faster and easier for me then doing each team at a time if you know what I mean.
Nothing has to be unique so you can pick the same logo, song, character (8 of the same character) and even the same name, as long as there is 10 separate ones.