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The Harmony Core Sentries are the primary antagonists of Steven Universe: Harmony. They are robots that were designed to protect the Harmony Cores.
Beachside Harmony Core Temple Sentries[]
The Beachside Harmony Core Temple Sentries (tentative name) are a group of Harmony Core Sentries who first appeared at the Beachside Harmony Core Temple. They appear to have gumdrop-shaped bodies with two thin red objects on either side of their body. They have dozens of spider-like legs which they use to move around. At the front of their bodies are cannons which shoot red beams of light.
In Issue 1, after the gems warped to the beachside temple, these Sentries appeared and began firing beams of light at them. The gems were easily able to a giant version of this Sentry climbed up from the side of a cave and attempted to blast them all at once, but was quickly defeated by Garnet. After the team retrieved the Harmony Core, they retreated.
These Sentries next appear in Issue 2 when Peridot, Garnet, and Pearl returned to the temple to look for answers. The Sentries quickly engaged them in combat once more, casing Garnet and Pearl to fuse into Sardonyx. Using her hammer, she smashed a Sentry that was about to blast Peridot. After being saved, Peridot sheepishly suggested that they think about where the other Sentries went, causing them to realize that they must have warped back to the temple. After returning, they find a handful of destroyed Sentries scattered across the temple, with one grabbing the Harmony Core that had came unbubbled. It was quickly defeated.
In Issue 3, these Sentries appear in a flashback while Steven recounted the events that had led up to the gems discovering them.
In Issue 5, a group of these Sentries wash up on the shore of Beach City to help the Security Protocol Robot battle the Gems.
Island Harmony Core Temple Sentries[]
The The Island Harmony Core Temple Sentries (tentative name) are a group of Harmony Core Sentries who first appeared at the Island Harmony Core Temple. They appear to look similar to the Beachside Harmony Core Temple Sentries, except their legs have a more aquatic-theme and they have gets below their bodies.
In Issue 3, these Sentries confronted Pearl and Peridot while they went to retrieve the second Harmony Core.
Antarctic Harmony Core Temple Sentry[]
The Antarctic Harmony Core Temple Sentry (tentative name) is a Sentry that first appeared at the Antarctic Harmony Core Temple. It appears to be a black humanoid, with a chest-like body, with the Harmony Core in the middle. It's limbs appear to be sharp, with their only intended purpose being combat.
In Issue 4, this Sentry appeared shortly after Garnet arrived at the Arctic Harmony Core Temple. The two engaged in combat, with the creature pushing Garnet off of a cliff. Before she fell, she was able to sever one of its arms. Garnet soon returned to the top of the temple, this time with the company of Lion. The two continued to battle, with Garnet eventually being victorious.
Gallery[]
Security Protocol Sentry[]
The Security Protocol Sentry (tentative name ) is a giant Sentry who appeared after Steven attempted to destroy all of the Harmony Cores. The Sentry was created from the Harmony Core on Homeworld, which teleported to Earth to fight the gems. The Security Protocol Sentry appears to be a giant humanoid robot, with its design being inspired by that of the Harmony Core. In the center of its face is the Harmony Core from Homeworld.
In Issue 4, the creature appeared briefly in the final panel after it was summoned due to the Security Protocol being activated. In Issue 5, after being confronted by the Sentry, Amethyst and Garnet fused into Sugilite and began to battle it. They momentarily had the upper hand; knocking the Sentry to the ground using their giant whip. However, it quickly got to its feet, made its arm into a blade, and retaliated, causing Amethyst and Garnet to become unfused. The Sentry then turned its attention towards Steven, who it attempted to crush using its large foot. Sadie then called its attention, distracting it with a song. While distracted, Garnet threw Amethyst at the Sentry, causing her to bounce off of different parts of its body. Garnet then leapt into the air and punched it in the face. Using a guitar, Peridot slammed the Sentries leg. Coincidentally, the Sentry blew up upon impact, most likely having been destroyed by the harmonized music.
Gallery[]
Trivia[]
The creature Garnet saw with her future vision.
- During Garnet's vision in Issue 1, she foresaw a creature that appears to share some resemblance to the Sentries. However, this creature appears to look more similar to a Corrupted Gem.
- The Sentries' harmony core looks like Spinel's gem.
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