Sometimes, this series can be very depressing, and even hit at home for some viewers.
Season 1
- In Bonnie's Guitar, watching Bonnie slowly slide into depression until he tries to kill himself is quite unsettling.
- In Fazbear Deep, watching Foxy, the usually calm and mature one, burst into tears yelling that he hates his crew for flatout ditching him in the rain while they took shelter is very upsetting to watch, even if it was just a dream.Foxy: Guys-! I-! You-! You don't deserve me! Why would you do this to me!? I've worked really hard to keep you running and safe! It's-! I HATE YOU GUYS!
- In Chica Runs Away, Freddy and Foxy's realizations as they realize their own faults in Chica running away is pretty upsetting to watch, although one might get a kick out of Bonnie's heel-face turn
- In Nightmare Foxy, considering Nightmare Foxy gains a moment of Foxy's humanity upon seeing Chica, a fridge horror moment occurs when it's realized that means Foxy is still trapped and awake within Nightmare Foxy, being forced to watch what's going on.
Season 2
- In Chica's Birthday Disaster, Bonnie slamming the cake into Chica's face could be considered upsetting, even moreso Freddy talking to Bonnie after the fact, in which the former says nobody likes the latter because he has to ruin everything, which makes Bonnie reconsider his actions.
- It gets even worse in the next birthday episode, Bonnie's Birthday Surprise, as at this point, Bonnie had been led to believe all had been forgiven and he and Chica were considered friends now... enter Chica slamming the cake into his face, revealing she had made the entire thing up and they were never friends in the first place. This completely abandons Bonnie's nice guy arc and throws him back to hating Chica and kickstarting the arc of the next two episodes. Luckily, Chica gets her own laser-guided karma just a few episodes later
- The final episode itself has a few sad moments, mainly with the latter members of the band, Chica and Foxy. Chica (who had been body-swapped with Bonnie) had grown attached to her new fitness, giving her a new sense of self-confidence, and Foxy (who had been body-swapped with Freddy), who's old age hadn't been faring him well, soon feels young again within Freddy's body, whilst Bonnie and Freddy are left utterly miserable in the former two's respective bodies. This leads both Chica and Foxy to not want to swap back with Freddy and Bonnie due to their insecurities. But whilst Foxy is persuaded to give back Freddy's body rather quickly, Chica still doesn't give in and ends up destroying the antidote, which causes both Bonnie and Golden Freddy to lose their temper. Springtrap is able to come by with a spare antidote, however, and everything goes back to status quo, much to the anger of Chica.
Season 3
- In The Return of Nightmare Foxy, Foxy is struck and killed by Nightmare Foxy, and ends up giving a speech to the other animatronics before dying, which causes Bonnie to go on a grief-stricken rampage and beat up Nightmare Foxy, until the rabbit is cornered, who in turned is saved by Freddy, who had been un-nightmarefied.
Season 4
- In Cupcake Gets Kidnapped, once Cupcake is kidnapped, Chica becomes an utter wreck, and upon "learning" (via a lie from Bonnie) that Cupcake is dead, it's heavily implied Chica was about to take her own life so she could join him. However, Bonnie is able to bring Cupcake back from Bowser Jr.
Season 6
- Everything that happens in Evil Comeback. From Withered Golden Freddy dying to Springtrap realizing what he did under the program’s influence.
