Warning: There are massive spoilers ahead for "The Walking Dead" season nine, episode 15, "The Calm Before."Sunday's episode of AMC's "TWD" brought a major moment from the comics to life.In addition to comic moments, INSIDER breaks down references to past seasons, including an iconic scene from season two.AMC's "The Walking Dead" shook things up Sunday night by bringing a big moment from the comics to life on the season's penultimate episode instead of waiting for its season finale.In an extra-long episode, the zombie drama killed off 10 characters in one fell swoop. Alpha (Samantha Morton) infiltrated King Ezekiel's fair to kidnap a mix of background characters, recurring cast, and longtime members of "TWD," ranging from reformed Savior DJ to Enid (Katelyn Nacon) and Tara (Alanna Masterson), before brutally sticking their heads on pikes.Even if you were expecting to see the iconic Whisperer pikes from the comics this season, they didn't go down exactly how they did in the comics. There also weren't as many.Keep reading to see what moments you may have missed straight from the comic along with a few references to earlier seasons.Michonne recalls the first time she met Rick on season three."I also know why Rick didn't trust me when I showed up at the gates of the prison, and how people didn't trust you after seeing you on the other side of the Governor's firing line," Michonne tells Tara when making an argument for why they should give Alpha's daughter, Lydia, asylum.After spotting her at the end of season three, episode six, Rick is hesitant to trust Michonne. But she brings formula for his newborn daughter and leads Rick and Daryl to Glenn and Maggie, who are being held hostage by the Governor.Rachel from Oceanside has been recast and aged up.When the communities gather together to sign Michonne's charter, you may have thought the representative for Oceanside was a recast Cyndie.It's actually an aged-up Rachel, the young girl Tara had a mini ongoing feud with at Oceanside back in the day. Rachel came close to killing Tara on the beach back on season seven, episode six before Cyndie stops her. Rachel references this on Sunday's episode."I was going to kill you on sight when you washed up on our shore," Rachel says to Tara, confirming she's not Cyndie.Showrunner Angela Kang confirmed this in an email with INSIDER.A puppet show at the fair is in honor of Shiva.In a brief moment, you can see Shiva and Ezekiel puppets at a booth."Do you guys know the story of Shiva'" a man at the fair asks a group of kids.That might be a rough story for kids. Shiva was devoured by the undead while protecting King Ezekiel on season eight, episode four.See the rest of the story at Business Insider Click here to read full news..