History ShoutOut / HalkegeniaOnline

** These two where partners in a Crossover Fanfic called Mass Effect: Human Revolution

* Two detectives dispersing a crowd of onlookers: “Move along people, there's nothing to see here. [[StarWars These aren't the Faeries you are looking for.]]”

* One of the books on basic magical theory that Louise reads is [[Disney/{{Aladdin}} Jafar's Dissertations]] Volume 3.

* Guiche's great grandfather [[Discworld/MonstrousRegiment was in fact his obese great-grandmother mistaken for a man]], while his mother [[Discworld/GuardsGuards is based on Sybil Vimes.]]

* Marina, Kurotaka's sniper, is based on her namesake Marina Wolfsted from VideoGame/ValkyriaChronicles

* Caramella again, after being launched at Dunwell, [[{{Film/Hellboy}} "You killed my partner!" The swordswoman roared. "Your ass is mine!"]]

* When Yui first enters the classroom, she makes the observation [[WebAnimation/{{RWBY}} "New people were just friends she hadn't met yet"]]

* In Sugou's treasure room there's a large sword called [[WorldOfWarcraft The Blade of]] [[LeeroyJenkins Jenkins]].

* When Louise [[spoiler:casts wandless Explosion]], there is a voice in her head, and [[spoiler:her arm is encircled with yellow runes]], just like [[spoiler:when [[LyricalNanoha Nanoha]] casts bombardment spells]].

* In Chapter 12 Part 1 Yui does what is basically [[spoiler:a MagicalGirl TransformationSequence]]. According to Word of God it was [[spoiler:based specifically on [[LyricalNanoha Vivio]]]]

* Suisen's comment after Klein suggests swimming in the Ragdorian lake: “Fishbait ba!” The Pixie tucked into Argo's cloak repeated. “[[TheWizardOfOz For <<Lake Dragons>>, and <<Lilly Wing Fish>>, and <<Sword Crabs>>, oh my chyaa!]]”

* Sword Shiori: [[TheWizardOfOz “Goblins, and Griffins, and Waldriders, oh my.”]]

* It is mentioned in the first chapter of [=HalO=] v2.0 that Asuna is experimenting with making noodles. Caramella makes Kino wear [[{{Naruto}} an orange jumpsuit]] for tasting.

* A sergeant in Chapter 3 Part 2 is reading a book called [[ThePrince The King]] by one [[NiccoloMachiavelli Niccolò di Bernardo]].

-->[[SamuraiJack "No! Jump good!"]] Caramella shouted as she slammed into him with her one armed shield.

* [[spoiler:During the battle at the Ragdorian Lake resort]] Kofu imitates the [[TengenToppaGurrenLagann Kamina pose]].

* When Asuna approaches the Chalice of Rebirth, her hair and wings briefly turn blue. This is a reference to her avatar from Volume 7 of the novels, where she was playing as an Undine.

* The vaults of the Tudors are said to house many powerful relics, among them [[Film/{{Hellboy}} The Seventy Companies of Seventy Golden Knights]], the [[Literature/BookOfGenesis Garden of the Tree of Knowledge]], the [[WesternAnimation/HeManAndTheMastersOfTheUniverse1983 Sword of Grarhauss]], and the [[Literature/HonorHarrington First Ship Hringhorni]].

* During his duel with General Belgen de Gramont, Kirito uses a weapon enchantment [[ShakuganNoShana <<Flame Haze>>]].

* There is [[Theater/RomeoAndJuliet at least one tragedy featuring the Potion of the Living Death as a major plot point]].

* When Yui first enters the classroom, she makes the observation [[{{RWBY}} "New people were just friends she hadn't met yet"]]

* When asked by the children for a bedtime story, Shiori ends up retelling StarWars, complete with sound effects.

* During the retreat at Skiesedge one of the SAO 300 has received [[VideoGame/{{Skyrim}} an arrow through the knee]].

* “Hardly in need of forgiveness.” Julio answered, his smile returning. [[TabletopGame/Warhammer40000 “Blessed is the mind too small for doubt]], Father Andre.”

* The Lerechaun representative and Lord Rute's retainer is named [[Literature/TheHobbit Torin]].

* During her fight with Rip Jack, Morgiana uses [[DungeonsAndDragons Magic Missile]].

* Guiche's great grandfather [[MonstrousRegiment was in fact his obese great grandmother mistaken for a man]], while his mother [[GuardsGuards is based on Sybil Vimes.]]

* Asuna mentions that there's supposed to be a giant field boss somewhere in the Desert Zone around Gaddan, called [[{{Dune}} Old Man of the Desert]] ([[spoiler:i.e Shai-Hulud]]).

* The Imp assassin guild, Hogei-sen, are described as looking like the Whaler's from {{Dishonored}}.

* “Hardly in need of forgiveness.” Julio answered, his smile returning. [[{{TabletopGame/Warhammer40000}} “Blessed is the mind too small for doubt]], Father Andre.”

* Drake, Morgiana's second-in-command is based on Drake Anderson from ReadOrDie. His opening speech mirrors Anderson's rant at Yomiko almost word for word.