Icon-goseiger.pngThis article is about a/an set of Headders in Tensou Sentai Goseiger.

Seaick Brothers (シーイックブラザー Shīikku Burazā) are a trio of submarine style Headders that combine onto Gosei Great to form Seaick Gosei Great. They are composed of the Manta Headder (マンタヘッダー Manta Heddā), the Sawshark Headder (ソーシャークヘッダー Sōshāku Heddā), and the Hammershark Headder (ハンマーシャークヘッダー Hanmā Shāku Heddā)


Manta Headder

Manta Header is a manta ray mecha. Forms the head of Seaick Gosei Great and can shoot blue energy blasts from the center. When attached to the Spear of Ground Gosei Great, he shoots out a giant whirlpool of water.

Hammershark Headder

Hammershark Headder is a hammerhead shark mecha that's a member of the Seaick Brothers. Forms the left hand of Seaick Gosei Great.

Sawshark Headder

Sawshark Headder is a saw shark mecha that's part of the Seaick Brothers. Forms the right hand of Seaick Gosei Great.

Seaick Gosei Great

After combining with the Seaick Brothers, Gosei Great becomes Seaick Gosei Great (シーイックゴセイグレート Shīikku Gosei Gurēto) and the Goseigers will announce: "Seaick Gosei Great! Advent!". Seaick Gosei Great can scan an opponent's weaknesses using the high sensitivity sonar Seaick Analyze (シーイックアナライズ Shīikku Anaraizu) on its right eye and can headbutt opponents using it's head. By inserting the Victory Charge Card in the Tensouder to initiate Seaick Gosei Great's final attack the Seaick Strike (シーイックストライク Shīikku Sutoraiku), where it shoots rows of holographic cards from it's hands and head to the opponent paralyzing them in place then finally do a combination hammer-punch/downward slash move.

Another Seaick Gosei Great

When using the Manta and Hammer Headders as hands and the Sawshark Headder as chest armor, Gosei Great becomes Another Seaick Gosei Great (アナザーシーイックゴセイグレート Anazā Shīikku Gosei Gurēto) and the Goseigers will announced: "Another Seaick Gosei Great! Advent!". First debuts in Epic 18.

Additional Formations

Gosei Card

Summon Card

This Gosei Card is used by the sole surviving Seaick Goseiger, Gosei Blue, to summon the Seaick Brothers.


Gokai All Headders Great Charge

The Greater Power of the Goseigers allows GokaiOh to summon the Gosei Headders, namely the Seaick, Skick and Landick Brothers as well as the personal Headders of the five Goseigers. The Headders are used to charge at an opponent in a finishing attack called the Gokai All Headders Great Charge (ゴーカイオールヘッダー大進撃 Gōkai Ōru Heddā Daishingeki), which was used once to destroy a horde of Non-commissioned Officers Sugormin. Tvicon.png TV STORY-Ep. 17: The Amazing Silver-Colored Man


  • The Manta Headder helmet resembles the hat of a pirate captain, with an eyepatch that acts as a scope to lock on to targets, something that is referenced during Gokaiger Goseiger Super Sentai 199 Hero Great Battle.
  • Unlike the other tribe brothers, the Seaick Headders can only be used by the other Goseigers during battle because there is only one Seaick Tribe member in the team.

See Also

Icon-goseiger.png Tensou Sentai Goseiger
Alata - Eri - Agri - Moune - Hyde - Gosei Knight
Magis (Deceased)
Tensouder - Leon Cellular - Gosei Cards - Gosei Blaster - Leon Laser - Vulcan Headder - Gosei Buster - Miracle Gosei Headders - Gosei Tenswords
Master Head - Nozomu Amachi - Shuichiro Amachi - Datas - Shinkengers - Gokaigers
Mecha and Robos
Dragon Headder - Phoenix Headder - Snake Headder - Tiger Headder - Shark Headder - Seaick Brothers - Landick Brothers - Skick Brothers - Knight Brothers - Exotic Brothers - Hyper Change Headder - Mystic Brothers - Gosei Wonder
Gosei Great - Datas Hyper - Gosei Ground - Gosei Ultimate - Wonder Gosei Great
Evil Spirits
Warstar: Mons Drake - Dereputa - Buredoran of the Comet - Mizogu of the Clump - Zaruwaku of the UFO - Yuzeikusu of the Ice & Snow - Mazuarta of the Music - Ucyuseruzo of the Influenza - Hidou of the Swift Runner - Abauta of the Research - Fandaho of Nonsense - Irian of the Queen Bee - Kurasuniigo of 5000°C - Yokubabanger of the Electric Shock - Powereddark of the Mutation - Targate of the Satellite - Gyōten'ō of the Supernova - Deinbaruto of the Morning Star
Yuumajuu: Makuin - Kinggon - Buredoran of the Chupacabra - Tomarezu of the Tsuchinoko - Zeibu of the Mummy - Giemurou of the Kappa - Pesaranza of the Kesaran-Pasaran - Waraikozou of the Gremlin - Uobouzu of the Nessie - Zaigo of the Skyfish - Semattarei of the Brocken Spectre - Sarawareteiru of the Fairy - Hit of the Tengu - Jogon of the Ningyo - Pikarime of the Shakōkidogū - Elmgaim of the Baku
Matrintis: Robogog - Metal Alice - Buredo-RUN of the Cyborg - Zan-KT0 of the Shot (Gokaiger) - Zan-KT of the Shield - Zan-KT2 of the Shoot - Zuteru-S of the Mach - Bazaruso-LJ of the Scan - Adoborute-G of the Vital - Bakutofūji-ER of the Timer - Ain-I of the Neutral - Saroge-DT of the Imitation - Zan-KT3 of the Short
Earth Salvation Plan: Brajira of the Messiah - Namono-Gatari of the Ortaurus Headder - Bari-Boru-Dara of the Uniberus Headder - Rō-O-Zā-Ri of the Hydrapan Headder - Dark Gosei Knight of the Groundion Headder
Demon Bug Soldiers Bibi - Bibi Bugs - King Bibi