Here’s another anime nod, potentially. Edwards metal robotic arm matching with Yumi’s metal arm. With the other FMA references, I’d be damned if this isn’t one.
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Though this wasn't in the final release of CoU, it's definitely worth mentioning that this mask is heavily inspired by Kakashi's ANBU Fox mask.
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Honourable mention to this hairstyle looking like Chrome from Dr. Stone as well as the rope hairband! Don't know if this was the intention of the artists but!
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DEFINITELY REACHING RN BUT this could possibly be a NOD to Senku's hairstyle from Dr. Stone. This is a shot in the dark but MAYBE JUST MAYBE!
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A subtle reference to the Villain, Green Goblin from the movies Spiderman! This may be a stretch, but the mask is indeed called "Goblin Mask". It's hard to see but I'm trying to keep an open mind!
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These pigtails could potentially be a reference to Naruto's "Sexy Jutsu" with the blonde pigtails but this may be a very long reach.
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Here's Hinata's hairstyle and very possibly the "Blind Eye" trait could relate to the Byakugan. I wouldn't be surprised with the number of Naruto references peppered throughout the project!
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Another possible Jujutsu Kaisen reference with the hairstyle relating heavily to Megumi! It may be a little stretch but you can for sure see the likeliness of it being his hairstyle.
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Not sure if someone has pointed it out yet but this hairstyle and these markings can definitely reference Sukuna from the show Jujutsu Kaisen!
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Here's another Attack on Titan reference with the eyepatch! Hange Zoe!
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