Busou Shinki Battle Rondo
Armored God Princess Battle Rondo
© Konami -- ¥?
'Option' and 'Petit Moai' exist as obtainable sub-weapons.
Equiping Option will give you additional attack skill 'Laser of Nemesis' and the moai head will give you 'Ion Ring' the trademark of Gradius Moai.
Option - Konami official page
Petit Moai - Konami official page
Thanks to DeadMario