A time bar at the bottom of the screen shows the order of attack via character icons. (thekoalition.com)
Tapping on character icons cause those troop to spawn from your base and advance towards the enemy stronghold in a manner that will be familiar to anyone who has played a tower defence game. (appspy.com)
Furthermore, there's also another sixteen classic villagers with character icons, but no villager portraits in the files. (animalcrossingworld.com)