Guardian

Guardian (ガーディアン) is the sixth boss from the original Raiden.

Details

The Guardian is a pair of two-headed, tank-like statues which guard the floating continent. When the player approaches them, they will shine and then activate, moving left and right while the statue heads do the shooting. Each head is a separate target, meaning the player must destroy both to fully destroy each of the tanks.

Bosses
Raiden/Super Raiden	Desert Spider - Flying Fox - Phalanx MK-III - Gijido - Land Crown - Guardian - Antonov Ma-27 - Doreineji Core - Great Spider - Shadow Janet - Nova
Raiden II/DX	Ground Crawler - Walker - Albatross - Battle Axe - Thunder Fortress - Black Bird - Graphite - Huge Satellite - Mother Haven - Nodule
Raiden III	BS-01 - BS-02 - BS-03 - BS-04 - BS-05 - BS-06 - BS-07
Raiden IV	Exerey Iss - Ordo, Fulas and Mairazard - Famel Ya - Aguen and Ewat - Da Rutura - Isdogaram - Horda Gardia - Horda Gestorada
Raiden V	Platon - Great Horn - Kraken - Sea Carrier - Spice Birds - Blow of Hornet - Messiah - Sky Carrier - Angel - Humpty Dumpty - Divine Rampart
Raiden Fighters	Wild Weasel - Jasper Virtuos - Carrier Ship - Snow Tank - Randall Gigas - Vahrstor - Wild Weasel II - Rafflesia
Raiden Fighters 2	Turbine Controller - Seed Skater - Violet Head - Hummingbird - Gust Weasel - Sand Lobster - Rafflesia II - Red Eye
Raiden Fighters Jet	Four-Tread Tank - Heavy Bomber - Randall Gigas - Twin-Cannon Tank - Wild Weasel III - Jet Carrier - Hummingbird - Vahrstor - Hovercraft - Nuclear Submarine - Seed Skater - Red Eye - Jasper Virtuos - Simon Quartz - XTB-1
Viper Phase 1	Protejour - Espada
Caladrius	Weylgandr - Kychsrhea - Gespeneris - Schwarzbeleth - Sivilung - Wildduran - Beelzetolv