In Sword Master Story, you can select an acquired hero to display on your lobby screen.
1. From the character tab, select the hero you want to display on your lobby screen.
2. Tap the + button at the bottom-right corner.
3. Tap Set as Representative to display the hero on your lobby screen.
If you want to see the hero with a certain costume, equip the costume first, and then set the hero as the representative.