Shandala goes through a serious one in Broken Saints after her adopted brother is killed as result of her own actions. Considering she's also surrounded by mysterious foreigners on a boat half an ocean away from the only home she's ever known, it's even less surprising.
In Red vs. Blue, the Reds eventually discover the true purpose of their battles: They're basically labrats and are set up in situations to train the Freelancer and see how the Freelancer would act in that situation. They also discover that the Reds and Blues were intentionally chosen to be idiots to make things easier for the Freelancers. After Sarge realizes what this means, he winds up hastily constructing a Red Base out of scrap parts, deciding that if he's trash, he should be a sergeant of trash. He also relinquishes his rank as leader of his trio.
Koden goes through a temporary one in the DSBT InsaniT episode 'The Camping Webisode' after he discovers the gangs campsite has been trashed.