Desert Spider is the first boss in the original Raiden, and also the first of the "Twin Tanks" type of boss.
Desert Spider is a duo of railed tanks. Both tanks are identical, except for their paint job. You first confront the brown tank before the dark-green one comes into view. They are both equipped with four two-barreled guns which surround the rotating central cannon. They will be constantly aided by regular tanks coming from the sides.
|Raiden||Desert Spider - Flying Fox - Phalanx MK-III - Gijido - Land Crown - Guardian - Antonov Ma-27 - Doreineji Core|
|Raiden II/DX||Grand Crawler - Death Walkers - Albatross - Battle Axe - Thunder Fortress - Black Bird - Graphite - Huge Satellite - Mother Haven - Gray 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 - Spice Birds - Blow of Hornet - Messiah - Angel - Humpty Dumpty - Divine Rampart|