Kikai Gattai AkuaRaider

Kikai Gattai AkuaRaider (Machine Union Aqua Raider) is the second robo of the Akuareigers. Their mecha, dubbed the War Machines (戦争機械, Sensō kikai), are all themed to aquatic vehicles: a Japanese Junk ship (Whalereiger), a Police speed boat (Sharkreiger), a Submarine (Bladereiger), a naval cruiser (Eelreiger), and a Coast Guard Cutter (Dolphinreiger). The components are compatible with Battalion Mars to form Super Battalion Mars.

Super Battalion Mars

 * 007 Speed Boat and 009 Cruiser become the feet
 * Mars' left arm is replaced by 008 Sub
 * 006 Junk and 010 Cutter attach to the back, with the tower of cutter attaching to 008 Sub's scope to form hand, 006 Junk's sail becomes helmet