'The Walking Dead' cast reacts to Sunday's unexpected death and how it will affect their characters moving forward

Gilliam, who plays Father Gabriel, wasn't familiar with Sebastian's comic fate.

"He lives?" Gilliam said to Insider, who was surprised when we filled him in on what happens in the comics."Well, the fucker deserved to die, so I'm glad he's gone."

In the comics, Sebastian shockingly kills off Rick. Since Rick departed the series in 2018, some fans have wondered if Aaron (Marquand) may get Rick's death since he looks a lot like comic Rick these days.

When Insider asked Marquand if anyone ever considered giving him Rick's comic death, he said, "No, that was never really discussed, at least with me."

Marquand added that the way Rick died — Sebastian shot him while he was defenseless in a bed — was "a really lame way to kill someone."

Marquand hinted that his character will die a different way, but it wasn't clear if he was joking around.

Max didn't like that Lance took the fall for Sebastian on Sunday's episode. She recorded Sebastian without him knowing and had Eugene play the tape that turned the community against him before he was bitten.

"Ding dong! I'm happy that he's gone," Bingham told Insider of Sebastian's death. "Teo, in real life, the actor who plays Sebastian, is incredible. So that was hard to say goodbye to him, but yeah, he's the worst."

McDermitt, who was on the same call as Bingham, agreed that it was time for Sebastian to go, telling Insider: "If the show had kept going past season 11, it would've been awesome to have a character like Sebastian around because he's a live grenade in the middle of any situation. But the fact that we're ending after season 11, Teo had to go. There's no room for Teo. We gotta get rid of him."

He added that Sebastian's death was a great change from the original comic story.

"It keeps people on their toes. We've diverted from the comics so many times and they're always trying to make the story better," McDermitt said, adding, "Obviously, with Rick not being there at the Commonwealth, like he is in the comics, it's like, 'What do you do?' The next best thing is to kill Sebastian and, I think his death is earned and I love that Eugene and Max were a part of it."

McDermitt only had one regret about Sebastian's death.

"I was actually disappointed that Eugene wasn't killing him with his bare hands or something. That's what I was pushing for," McDermitt told Insider of Eugene ultimately tossing a walker onto Sebastian, which led to his death.

"I just wanna see Eugene go feral and strangle somebody, but I'll take a walker hit. That's the next best thing," he added.

When Insider mentioned that Lance is adjacently responsible for Sebastian's death since his goons let the dead loose inside the Commonwealth, Josh Hamilton chuckled.

"It's always sad when we lose a valued member of the Commonwealth, but I don't know that Lance is gonna be too broken up," Hamilton said, adding, "He brought it upon himself. I don't think that Lance is gonna lose as much sleep in a guilt sense."

That makes sense since Governor Milton pinned some of Sebastian's crimes onto Lance. Hamilton added that Lance has more pressing things to worry about at the moment than grieving Sebastian, like finding a way out of prison.

Sebastian briefly mentioned on Sunday's episode that he had another brother who died who wasn't in the comics.

When Insider asked Robins about that, she said they added another son to help give her character more of a backstory, saying, "We were trying to figure out why I'm particularly so disappointed in Sebastian. It's partly because we decided that the previous son was really the golden child who was supposed to sort of carry on the legacy."

"Now I've got this creature to deal with who is not the day at the beach," Robins laughed, speaking of why Sebastian was such a disappointment to Pamela. "This is a difficult child and how disappointing that is because I see the potential of the bloodline, but he's just not stepping up to the task."

"I love working with Teo," Robins said of the actor. "He's just a wonderful person and so much fun to work with.

She added that they're still in communication, saying, "Everybody's got to die at some point, I guess, but it was sad, because we enjoyed working with him. I still stay in touch with him and he'll be in other things, but we're sorry to see him go."

"Sebastian's death is a big, big deal," Matsuura told Insider of what his death means for Yumiko and the group moving forward. "We know that we're playing with fire."

Matsuura's worried that her character, Yumiko, might be in more danger than others at the moment because of her "precarious" situation as Governor Pamela Milton's lawyer.

"I'm really on the inside at this point," Matsuura added. "I'm working as a lawyer for the Commonwealth and, unlike anybody else in our crew, I have this sort of a privileged position where I could get some serious intel."

Matsuura has a good point. Governor Pamela Milton was already starting to suspect that Yumiko may have had an awareness of Connie's scathing article against her son, Sebastian. His death may make Pamela more closely scrutinize Yumiko.

"It's a double-edged sword," Shaw told Insider of what Sebastian's death means for Mercer. "Part of Mercer wants Sebastian, not dead, but, punished. I think it is a shock to him to find that Sebastian gets killed, and the way he gets killed."

"As the actor, I was like, 'Fuck man. I'm gonna miss this dude.' I don't wanna see him go. Teo is one of the most amazing human beings I've ever met," Shaw added. "Great guy. He plays a really good dick."

"It's good riddance, basically," Ridloff told us over Zoom. "What are you gonna say? It's true."

Connie's article exposed that Sebastian was behind some of the missing people in the Commonwealth who died running errands for him so he could continue living a lavish lifestyle.

"Man, he's — can I say asshole? He's an asshole," Theory said of Sebastian's character.

The actor, who plays Kelly, described Sebastian as giving off "rich boy" vibes, someone who was "trying to impress mom" and wanting to "show off his power."

"But the actor is amazing," Theory said of Rapp-Olsson. "His character just annoyed me so much."