Rainbow Shield

The Rainbow Shield (レインボウシールド Reinbō Shīrudo) is a weapon formed from the Arms Microns... or rather four copies of R.A.. We don't recommend trying to taste it.

"Sealed Transformation! The Mystery of Orion Pax"
The Shining R.A. Corps formed the Rainbow Shield and invited Shining R.A. to join the combination, but he refused as he found the colorful team rather overbearing.

"Resurrection Transformation! The Reviving of Planet Cybertron"
R.A. later summoned the Corps to his side during a showdown between his Star Saber and the Dark Star Saber, using their combined form to perform a powerful Rainbow Shield Attack.

Prime

 * Shining R.A. GR (Promotional Arms Micron, 2012-09-29)
 * Shining R.A. P (Promotional Arms Micron, 2012-09-29)
 * Shining R.A. Y (Promotional Arms Micron, 2012-09-29)
 * Shining R.A. R (Promotional Arms Micron, 2012-09-29
 * The Rainbow Shield is formed from four clear redecos of R.A. given away at certain stores (AEON for Green, Joshin Kids' Land and Bic Camera for Purple, Eidon group, Yamada Denki and Yodobashi Camera for Yellow, and ToysЯUs for Red). The typical order is, going clockwise, purple, red, yellow, and then green, following the order of a real rainbow as much as possible. The blades can be adjusted to different configurations, including a rather unfortunate swastika-looking mode.