|This article is about a/an episode in Kaizoku Sentai Gokaiger.|
The Big Abare with the Dinosaur Robot Drill (恐竜ロボットドリルで大アバレ Kyōryū Robotto Doriru de Ō Abare) is the eighteenth episode of Kaizoku Sentai Gokaiger. Although it has elements regarding three Sentai series (Kyōryū Sentai Zyuranger, Mirai Sentai Timeranger, and Bakuryuu Sentai Abaranger), it is not an official tribute to any of these series. It reveals the origin of Gokai Silver and the debut of his mecha made from the Greater Powers of the three aforementioned series, GoZyuDrill.
Gai tells the team on the Gokai Galleon how he got three Greater Powers from three particular Sentai heroes. Marvelous confiscates his powers, putting Gai to a test to show him something Marvelous cannot do.
Gai reveals to the Gokaigers that he became Gokai Silver after acquiring three Greater Powers. When he is invited aboard the Gokai Galleon, he explains that a few days ago, he was hit by a truck while saving a girl across a street. While he was in a coma at the hospital, he had a dream of meeting DragonRanger, TimeFire and AbareKiller - the latter changing into Mikoto Nakadai and handing Gai the Gokai Cellular and Gokai Silver key. Before the three warriors disappeared, Mikoto told him to become the greatest hero and that they entrust the powers of the Zyurangers, Timerangers and Abarangers to him; at that point, Gai woke up from his coma with the phone and key in his hand.
Despite the revelation, Gai has yet to figure out how to use the three powers. Because of this, Captain Marvelous confiscates the Gokai Cellular and GokaiSilver key from Gai, asking him to show him something he cannot do. Later, while thinking of an answer to Captain Marvelous' question, Gai responds to a Zangyack invasion led by Action Commander Osogain at a construction yard. Despite not being able to change into Gokai Silver, he fends off the Gormin Sailors with lumber, but is quickly outnumbered and beaten up before the Gokaigers intervene. Seeing his unrelenting courage and recklessness in battle, Captain Marvelous hands Gai his phone and key - officially making him a member of the crew.
After finishing off the Gormin Sailors, the six Gokaigers change into the Shinkengers (though Marvelous handed Gai the King Ranger Key first before giving him the Shinken Gold Key due to his vague request) and destroy the two Zugormin units with the Shinken Gokai Slash attack. The five main Gokaigers then change into different silver warriors to weaken Osogain before Gokai Silver destroys him with the Gokai Supernova. When Osogain is enlarged and joined by six giant Zugormin units, Gokai Silver uses the powers of the TimeFire, Dragon Ranger and AbareKiller keys to summon GoZyuJin and destroyed them in a most show-stopping way. Back aboard the Gokai Galleon, Captain Marvelous tells Gai that while he is part of the crew, he is a pirate apprentice - much to Gai's dismay. Despite this, he looks forward to working with the Gokaigers. Don, however, is not comfortable with Gai addressing him as "Don-san".
- Captain Marvelous (キャプテン・マーベラス Kyaputen Māberasu): Ryota Ozawa (小澤 亮太 Ozawa Ryōta)
- Joe Gibken (ジョー・ギブケン Jō Gibuken): Yuki Yamada (山田 裕貴 Yamada Yūki)
- Luka Millfy (ルカ・ミルフィ Ruka Mirufi): Mao Ichimichi (市道 真央 Ichimichi Mao)
- Don Dogoier (ドン･ドッゴイヤー Don Doggoiyā): Kazuki Shimizu (清水 一希 Shimizu Kazuki)
- Ahim de Famille (アイム・ド・ファミーユ Aimu do Famīyu): Yui Koike (小池 唯 Koike Yui)
- Gai Ikari (伊狩 鎧 Ikari Gai): Junya Ikeda (池田 純矢 Ikeda Jun'ya)
- Navi (ナビィ Nabyi, Voice): Yukari Tamura (田村 ゆかり Tamura Yukari)
- Chief of Staff Damaras (参謀長ダマラス Sanbōchō Damarasu, Voice): Kōji Ishii (石井 康嗣 Ishii Kōji)
- Development Technical Officer Insarn (開発技官インサーン Kaihatsu Gikan Insān, Voice): Kikuko Inoue (井上 喜久子 Inoue Kikuko)
- Osogain (オソガイン Osogain, Voice): Dai Matsumoto (松本大 Matsumoto Dai)
- Mother: Runa Ito (伊藤留奈 Itō Runa)
- Girl: Ayu Matsuura (松浦愛弓 Matsuura Ayu)
- Nurse: Yuki Kanzaki (神崎ゆうき Kanzaki Yūki)
- Mikoto Nakadai (仲代 壬琴 Nakadai Mikoto): Kotaro Tanaka (田中 幸太朗 Tanaka Kōtarō)
- Gokai Changes in The Big Abare With the Dinosaur Robot Drill:
- This is the third time the main five Gokaigers all transform into Rangers of the same color and the first to use a color other than red. In this case, silver.
- As a result, this is the first time Marvelous transforms into a non-Red Ranger.
- This is the only Gokai Change set where a Gokaiger participates without using a transformation for themselves.
- This is the second episode in a row to feature an all-Sixth Ranger Change. In both cases, Luka uses the MegaSilver Key.
- While the first Gokai Change for the main Gokaiger was for the first Sentai ever created in terms of real world history (Gorenger), Gai's first Gokai Change was into the first Sentai hero in terms of Sentai history itself: KingRanger of Ohranger became active and fought 600 million years in the past, long before any other Sentai hero in existence.
- First appearance of Gokai Silver's mecha: GoZyuJin
- As part of Super Hero Time, this episode aired alongside Kamen Rider OOO episode 39, The Nightmare, Security Cameras, and Ankh's Revenge.
- This episode title is similar to a title of Abaranger, with the usage of "Abare" somewhere in the title.
- This is the first episode that GokaiOh is not used.
- Despite AbareKiller, DragonRanger, and TimeFire's appearance, this isn't the official tribute to the three as Yukito Sanjyou (AbareBlue) and Emiri Imanaka (AbarePink) appear in Ep. 29: The Abare Quick-Changing New Combination, Domon (TimeYellow) appears in Ep. 40: The Future is the Past, and Goushi (MammothRanger) appears in Ep. 50: The Day of Battle.
- The three past heroes that appear to Gai (Mikoto Nakadai, Burai and Naoto Takizawa) all share the trait that they each debuted in their respective series as antagonists to the main team for personal reasons, reformed afterwards and later died.
- The spirit of Gai that leaves his body going into a white light is a reference to a scene in episode 1 of Bakuryuu Sentai Abaranger, where AbaRed had a similar experience.
- This episode has some similarities to another 18th episode, Act 18: Samurai Promotion:
- Like what happened to Genta in Act 18, Gai's transformation device was also confiscated in this episode. They both later regained their respective devices and officially became members of their respective teams.
- The climactic battle for both episodes took place in the same location, the construction yard. Coincidentally, the Gokaigers also transformed into the Shinkengers although Gai transformed into KingRanger at first by mistake.
- The scene where Gai talks with AbareKiller, DragonRanger, and TimeFire take place in the same place where KenDan was held.
- This is the first non-tribute episode to feature a Ranger Legend.
- As the three deceased sixth heroes depart before Gai wakes up, Mikoto tells him to thrill himself to his heart's content. In Abaranger, Mikoto had a thirst for excitement which he quenched by fighting as AbareKiller, a trait which he retained even after he abandoned evil and fought with the Abarangers. Gai honours this in episode 29 when the Gokaigers fight Action Commander Daiyarl as the Abarangers, while fighting as AbareKiller he comments on the thrill of the fight in an unusually calm tone of voice, referencing Mikoto Nakadai's personality.
Kaizoku Sentai Gokaiger Volume 5 features episodes 17-20: Ep. 17: The Amazing Silver-Colored Man, Ep. 18: The Big Abare with the Dinosaur Robot Drill, Ep. 19: Armor of the 15 Warriors and Ep. 20: The Lost Forest. It was released on November 21, 2011. 
- Silver Lining, Part 2 - Power Rangers counterpart in Power Rangers Super Megaforce. See comparison page.