GaGa Armlet

GaGa Armlet (ガガの腕輪,) is a mysterious O-Part of the Incas that was created 120 years ago as one of two keys, along with the GiGi Armlet, that would allow the user of the two to rule the world with Incan super science.

Kamen Rider Amazon
The original Gaga Armlet bears a striking resemblance with its twin counterpart, the GiGi Armlet, with only the snout of the figure facing upward instead. In the last episode, Amazon combined it with his Gigi Armlet and was given a power-up that made him immune to even Great Emperor Zero's lance.

Kamen Rider Decade
In the A.R. World of Amazon, the GaGa Armlet was gold in color and had a design similarly found in Inca Architecture. It is possessed by the Ten-Faced Demon and ruler of Geddon, Llumu Qhimil who, like the original, seeks the GiGi Armlet possessed by Amazon to possess the complete ancient Incan powers. Briefly achieving such power when he is given the GiGi Armlet taken from Amazon by Masahiko, Llumu Qhimil demonstrates the ability to turn humans into monsters instantly. However, once Masahiko realises his actions, he takes the GiGi Armlet off the Ten-Faced Demon and gives it back to Amazon.