The most recent episode of Game of Thrones, "The Last of the Starks," saw one of the most tragic deaths of the season when Cersei Lannister ordered the Mountain, her giant sidekick and protector, to execute Missandei, Daenerys Targaryen's most trusted advisor. While Cersei relished in her victory, Hafþór Júlíus Björnsson—the actor underneath the Mountain's armor—wants fans to know that he's sorry it had to happen that way.

Björnsson, who has played the Mountain since the show's fourth season, issued an apology on Instagram for his character's actions in the latest episode. The post includes a photo of himself alongside Nathalie Emmanuel, who played Missandei, along with the hilarious caption: "So sorry. Cersei made me do it. Hope we're cool!"

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So sorry. Cersei made me do it. Hope we’re cool! ? @nathalieemmanuel

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Emmanuel also took to Instagram earlier this week to post a heartfelt goodbye to her character and the series, on which she has been a regular since season 3. "It's been one of my greatest joys playing Missandei of Naath … The quiet and kind translator. A brilliant woman who overcame so much suffering and found herself, her voice … and her one and only love,” the 30-year-old actress wrote.

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It’s been one of my greatest joys playing Missandei of Naath... The quiet and kind translator. A brilliant woman who overcame so much suffering and found herself, her voice... and her one and only love. She represented so much for me, personally, that I have no choice but to carry the things she has taught me into my life going forward. Thank you to everyone who made it possible for me to play this part... this life changing part... there are too many to list... @emilia_clarke GIRL! I love you... SO much. I’ve loved playing your BFF for the past 7 years. Thank you for being such a wonderful person in my life and a source of light and laughter. The Bad Ass Boss Lady Warrior Goddess club will live on forever ??? @raleighritchie.... Jacoooob! I literally cannot tell you what sharing the screen with you has meant to me. I found performances I didn’t know I had inside me, simply because you gave me so much to work against. Playing Missandei and Grey Worm’s journey has been so special. I couldn’t have asked for a more generous and supportive co-star... Also... We’ve been out in these streets together boiiii?? negotiating so much but always having each other’s back. Thank you for all of it... you have been a dear friend at every point. To the entire cast and crew... You will always hold a special place in my heart. The love and energy we shared will be hard to match. I feel like I hit the jackpot meeting and working with you all. I love you. To the fans of the show, and of Missandei... Thank you for all the love and support... It’s been a pleasure playing her for you. I know last night was pretty intense for some of you so I invite you to participate in my fantasy where I like to think that, right now.... Missandei is sipping a rum on a beach somwhere in sky ?... ?? #andnowmywatchhasended #MissandeiofNaath #Dracarys #thankyouforsupportingme #RIPMissandei #isleofbutterflies #? #illbeseeingyou

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While we're still heartbroken over Missandei's death, at least she went out with a bang (and a thud)—and chose her last word wisely. Before being beheaded, she simply stated "Dracarys," which is Daenerys's command to her dragons to breathe fire. Or, as Emmanuel tweeted, another way of saying "Burn the bish."