Sidian

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Sidian (Japanese: オニキス OnyxExplorers Original Acrylic Stand) is one of the admins of the Explorers, and a recurring major antagonist in Pokémon Horizons: The Series.
==In animation==
===History===
====Pre-series====
Sidian was one of the members recruited by Hamber to follow Gibeon's mission, being trained by him personally along with the other members of the team.
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Sidian first appeared as a hologram in The Ancient Poké Ball, alongside the other Explorers's admins. The first time he spoke and was seen clearly was in Quaxly, We Can Do It, judging Spinel over his last failure.
He made his physical debut in Reunion at the Ancient Castle!. At Hamber's request, Sidian and Coral accompanied him to the Galar region. In the next episode, after tracking down Amethio's location, the group arrived at the ancient castle where Diana was living at. Despite Hamber ordering them to stay on standby while he secured their target, Coral and Sidian invaded the location. He had his indiscriminately take out the living in the castle before he and Coral cornered Liko and Roy, only to be stopped by the sudden arrival of Captain Pikachu. Once Cap took out Sidian's Garganacl, Coral snapped and recklessly ordered her to use , allowing the Rising Volt Tacklers to escape and leaving the ancient castle in ruins.
In As Long as I'm with My Friends, Sidian and the other admins joined in a meeting to discuss the Explorers' next objective. Eventually, they decided to go after the Black Rayquaza.
In A Challenge from the Explorers, Sidian and Coral arrived in a seaside town in Paldea. Coral had led him there under the guise of finding something important, which was actually some rare Wiglett sweet buns. However, upon finding out they had sold out and that Liko and Roy had managed to get a box without even lining up, she left them a challenge letter on the back of Roy's Fuecoco. While Coral faced Roy, Sidian stepped in to take Liko on. Despite the rough start, the young Rising Volt Tacklers refused to give up and eventually broke through their foes' strategies. Impressed, the two Explorers decided to stop holding back, but were forced to withdraw after Sidian received a call to take part in mission involving the Black Rayquaza.
In The Plan to Capture Rayquaza, Sidian, Coral, and Chalce summoned the Black Rayquaza near Levincia by using a machine that generated an energy similar to that emitted previously and had their Pokémon battle against the . They started strong, unleashing powerful super effective moves, but lost control over Rayquaza once Dot managed to shut down the machine. Once again, Coral let her temper overcome her better judgment and commanded Glalie to use Self-Destruct, which collided with Rayquaza's . The resulting explosion was powerful enough to blast the Legendary Pokémon directly into the hull of the Brave Olivine.
In Welcome to Naranja Academy!, along with Coral, Sidian enrolled in Naranja Academy as part of the Tera Training. Sidian introduced himself to Clavell under the name Seasoning (Japanese: オニギリ Onigiri), much to Coral's amusement.
In Trending Terastallization! Dance, Dance, Quaxly!, Sidian was caught spying on Liko, Roy and Dot along with Coral by Clavell, believing that they were just wanting to know about their Academy colleagues, Clavell invited them both to watch Dot's battle against Iono, but eventually, Sidian left Clavell talking alone when Coral decided to go after food and Sidian went after her.
In Showdown! The Paldea Elite Four, it was revealed that Sidian managed to pass the first phase of Tera Training. During the Elite Four Tag Battle, Sidian confronted Rika alongside Tulip, but was defeated for insisting on protecting his ally's Pokémon. After a brief conversation with the Gym Leader about why this happened, Sidian left so Rika could begin her battle against Liko.
In The Terapagos I Don't Know, Sidian and Coral were seen with the other students during Clavell's speech that began the second part of the Training. Despite this, his Gym challenge was not revealed.
In Food Fit for a Kingambit!, Sidian decided to have food at the Anything Eatery. Shortly after entering, he encountered Liko, Roy, and Dot again. When Dot's accidentally crashed into Sidian's leg, he mistakenly assumed Dot had challenged him to a Pokémon battle. Seeing this as an opportunity to advertise and bring customers to the struggling eatery, Dot accepted the challenge and used Quaxly to battle Sidian's Garganacl. During the battle, the collision of Garganacl's and Quaxly's caused salt to spread across the street, attracting the attention of customers. Although confused the battle ended without a winner, a hungry Sidian decided to partake in the eatery's new menu item, which he enjoyed.
In The Approaching Shadow!, Sidian and Coral surrounded Roy and Dot on Spinel's orders, abandoning their student disguise. In the next episode, Sidian and Coral battled against Roy and Dot to stall them, but before Coral's Glalie could finish off their opponents, they were interrupted by Grusha's arrival, so Chalce commanded the two admins to retreat. At their base the Explorers Admins gathered to ask Amethio if he had betrayed the Explorers by helping out Liko in escaping from a cave after seeing the footage recorded by Spinel's and why he did not catch Terapagos when he had the chance. Before Amethio could give a proper explanation, Gibeon arrived and expelled his grandson from the Explorers for helping their enemies.
In Infiltrating the System! Naranja Academy in Danger!, while Chalce hacked Naranja Academy's systems to steal data on Terapagos, Sidian and Coral were ordered to prevent anyone from interfering with the mission. Later, on top of the academy's bridge, he encountered Liko, who had been made aware of the sabotage and went to confront the Explorers. Garganacl initially fought evenly with Floragato, only for the former to gain the upper hand once Sidian Terastallized it. Refusing to back down, Liko Terastallized Floragato as well, giving her enough of a boost to defeat Garganacl. After his defeat Sidian acknowledged Liko's strength and told her not to forget his name before leaving and taking Coral with him, much to her anger. In the following episode, Sidian and Coral reflected over their defeats before enjoying a rice ball and sandwich, respectively.
In HZ079, Hamber ordered Sidian and Coral to follow the Rising Volt Tacklers to Area Zero. In the next episode, Sidian was observing the Rising Volt Tacklers, but had to find Coral when she went off on her own. After finding her, Sidian noted that she caught a . In HZ081, Sidian and Coral witnessed the Rising Volt tacklers' battle against Lucius's Gouging Fire and Rayquaza from a distance. At the end of the battle, they departed from Area Zero to report their findings to their fellow Explorers.
In HZ083, Coral and Sidian attended a meeting with Gibeon where they reported the events in the Area Zero. After this, Gibeon instructs them to prepare for the battle that will follow in Laqua.
===Character===
Sidian overall appears to have a serious and stoic personality, hardly showing strong emotions at times, although he can still get frustrated or irritated when insulted by others, such as his fellow admin Coral. He usually obeys the orders of his superiors such as Hamber without much issues. Like Coral, Sidian can at times be less disciplined and more aggressive than his fellow admins, though less often than Coral. Sidian has a ruthless and combative disposition when operating, as seen during the siege on Diana's castle where he not only disobeyed orders to standby, but also commanded his to indiscriminately attack and take out every Pokémon in his path by having them inflicted with . In Infiltrating the System! Naranja Academy in Danger! he had his Garganacl attack both a security guard and his Psyduck with Salt Cure for getting in their way, further showing his ruthless nature. 
Nonetheless Sidian has his own personal limits and considers even Coral's volatile actions to be reckless. Sidian is notably level-headed and calm, and because of this he often stays around Coral to keep her volatile behavior in check. In line with his level-headedness, he appears to be surprisingly honorable, as shown in A Challenge from the Explorers, politely asking Liko to be his opponent and to fight with honor, without the use of dirty or underhanded tactics. Sidian's sense of honor is further shown in Showdown! The Paldea Elite Four, telling Rika that he couldn't allow Tulip, his Tag Battle partner, to suffer to guarantee his victory, and further remarking there's no point in disgraceful victories.
===Pokémon===
As seen so far, Sidian appears to specialize in Pokémon.
====On hand====
====Traveling with====
	
===Tera Training===
Sidian has participated in the Tera Training of Naranja Academy. His evaluation and overall score are:
* Tulip - Battle Exam - Basic; Approved (prior to Showdown! The Paldea Elite Four)
===Extracurricular activities===
As a student at Naranja Academy, Sidian participated in the following events:
* Elite Four Tag Battle: with Tulip Vs. Rika (Loss; Showdown! The Paldea Elite Four)
===Voice actors===
===Gallery===
====Artwork====
 	
Sidian's uniform	Concept art of Sidian's uniform
====Other====
 	 	 	 	
Expression sheet of Sidian from 	November 2023 Calendar by https://twitter.com/anipoke_PR/status/1719519635174031786	In artwork from"After the story" by	In artwork from"After the story" by	In artwork from"After the story" by
 	 	 	 	
Pokémon Fan No. 85 November 2023 Exclusive Art	 	 	 	
====Eyecatch====
==In the manga==
===Pocket Monsters===
Sidian briefly appeared in a flashback in HZM03.
== Trivia== 
* When stallizing his , Sidian uses the phrase (Japanese: そびえたて tower above all).
==Names==
Language 	Name 	Origin
Japanese 	オニキス Onyx 	From
English, Latin American Spanish, Italian,Brazilian Portuguese, Danish, Finnish,Norwegian, Dutch, Polish, Swedish, Turkish	Sidian 	From
German 	SidianOnikisu 	Same as his English nameTranscription of his Japanese name
French 	Sidienne 	From obsidienne (obsidian)
Korean 	오닉스 Onyx 	Transcription of his Japanese name
Chinese () 	昂尼斯 Ángnísī 	Transcription of his Japanese name
Chinese () 	昂尼斯 Ngòhngnèihsī 	Transcription of his Japanese name
Thai 	ออนิกซ์ Onyx 	Same as his Japanese name
Seasoning
Language 	Name 	Origin
Japanese 	オニギリ Onigiri 	From おにぎり (rice ball) and Onyx
English 	Seasoning 	From and Sidian
French 	Sidoine 	Similar to his name
Korean 	오므라이스 Omurice 	From and Onyx
Latin American Spanish	Sazón 	From sazón (seasoning)
Norwegian 	Timian 	From timian (thyme) and Sidian
Polish 	Serdelek 	From serdelek (sausage)
Turkish 	Simit 	From Simit (Turkish Sesame Bread Rings) and Sidian
Brazilian Portuguese 	Semsal 	From sem sal (saltless)
==References==
==Related articles==
Category:Male characters
Category:Animation characters
Category:Rock-type Trainers
Category:Characters with alter egos
Category:Trainers with Tera Orbs
de:Sidian
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ja:オニキス
zh:昂尼斯