The interplay between character types will build upon itself. I give this excerpt from The Space Bum as an example.
They marched into the farmlands just outside the suburbs of Port Arthur. Sam suddenly stopped and sat on a whitewashed wall. The boys sat down from him by several feet. Besh joined the Captain. Behind them, a field of brown corn stalks moved languidly in a gentle breeze. The late afternoon sun chased long shadows across the dirt road.
Sam was slumped forward as Besh seated himself to the right of the sweating Captain. The bag of ammo sat between his black boots and the APE lay across the Captain’s knees, under tired arms. Besh removed his backpack and dropped it into the dirt.
“It shouldn’t be much longer,” said Besh sympathetically.
Sam replied, “I’m tired and cranky. Mostly, I’m hungry. If I don’t get something to eat soon, Beasley will be walking into Port Arthur on one leg.”
Aghast, Beasley asked, “Why me?”
Raul laughed and jabbed a finger into Beasley’s ribs, saying, “Young and tender, man.”
Beasley stood and walked to the center of the road. He turned and replied to the Captain, “Well, I think you should consider a vegetarian diet.”