HalloweenWP (ハロウィン?) is a holiday annually celebrated by the staff and Servants of Chaldea Security Organization.
Characteristics
Halloween Servants
- Elizabeth Báthory (Halloween) (2015)
- Elizabeth Báthory (Brave) (2016)
- Mecha Eli-chan (2017)
- Mecha Eli-chan Mk.II (2017)
- Shuten-douji (Halloween) (2018)
- Elizabeth Báthory (Cinderella) (2021)
- Eliza the Nine-Tattooed Dragon (2022)
Halloween Events
- Singing Pumpkin Castle Adventure ~Mad Party 2015~ (歌うカボチャ城の冒険 ～マッドパーティー2015～?) (2015)
- Halloween Comeback! Extremely☆Large Pumpkin Village ~And The Adventure...~ (ハロウィン・カムバック！ 超極☆大かぼちゃ村 ～そして冒険へ……～?) (2016)
- Halloween Strike! Devil's Building Climber: Great Decisive Battle at Himeji Castle (ハロウィン・ストライク！ 魔のビルドクライマー／姫路城大決戦, Harōin Sutoraiku! Ma no Birudokuraimā / Himejijō Daikessen?) (2017)
- Mysterious Country of ONILAND ~Demon Ruler and the Golden Kamuy~ (神秘の国のＯＮＩＬＡＮＤ!! ～鬼の王とカムイの黄金～, Shinpi no Kuni no ONILAND ~Oni no Ou to Kamui no Ougon?) (2018)
- Csejte Halloween Trilogy Ultra Deluxe Compilation! (チェイテ･ハロウィン･トリロジー ウルトラデラックス総集編！?) (2021)
- Halloween Rising! ~The Queen of Sandstorm and the Apostle of Darkness~ (ハロウィン･ライジング！ ～砂塵の女王と暗黒の使徒～?) (2021)
- Halloween Rebellion of 108 People ~The Young Dragon and Her Adaptation of Water Margin~ (108人のハロウィン･リベリオン！ ～小竜娘水滸演義～?) (2022)