
Formed from the Arms Microns R.A., O.P., and B.2, the mighty Star Saber (スターセイバー Sutā Seibā) is just one of the many Super Combo Weapons the Arms Microns can form when they work together. Whether or not it lives up to the name, however, is a different story.
The Star Saber has several variations depending on the state of the Arms Microns and who else is added to the combination: if combined with the Matrix of Leadership while R.A. is in his Shining form, it powers up into the Super Star Saber (スーパースターセイバー Sūpā Sutā Seibā); if R.A. is Shining and O.P. and B.2 are in their Pure Energon forms, it becomes the Pure Energon Super Star Saber (ピュアエネルゴンスーパースターセイバー Pyua Enerugon Sūpā Sutā Seibā); and if all three are different colors and Iro and Wuji are added to the mix, the result is the Advanced Star Saber.
History[]
Arms Micron Theater[]
"Rescue Transformation! Fowler in Crisis"[]
After a miserable attempt by R.A and B.2 to cheer him up, O.P. resolved to show viewers his abilities and combined with his fellow Arms Microns into the Star Saber.
"Adhesive Transformation!? Magnetic Tag Match"[]
They later showed up in the form of the Star Saber to put a stop to Gabu, Baru, and Dai, who were using their own Super Combo Weapon form, the Dark Matter Calibur to vandalize the studio. In spite of their bravado, the Star Saber proved inferior and was knocked into its component Microns by a single swipe from the Dark Matter Calibur.
"Forbidden Transformation!? Ratchet's Strongest Legend?"[]
During their attempts to cook mapo energon, O.P., B.2, and R.A formed the Star Saber to cut open a pesky energon cube. They succeeded, with the cost of also cutting the table, set and title screen in half.
"Forgotten Transformation! Optimus Has Become a Decepticon"[]
Once O.P. lost his memories, Shining R.A. and B.2 attempted to jolt him back to normal by combining with him and the Matrix to form the Super Star Saber.
"Thunder God Transformation! Rebellion of the Battleship Nemesis"[]
After R.A. was powered up into Shining R.A., he told O.P. and B.2 that they could become like him if their hearts were pure. They achieved this feat and were transformed into new Pure Energon forms, then combined with R.A. and the Matrix into the Pure Energon Super Star Saber.
Toys[]

Prime[]
Suck it, Squall.
- Optimus Prime (Voyager, 2012-03-31)
- Set ID number: AM-01
- Bumblebee (Deluxe, 2012-03-31)
- Set ID number: AM-02
- Ratchet (Deluxe, 2012-03-31)
- Set ID number: AM-04
- The Star Saber is a massive blade formed by combining the Arms Microns O.P. (forming the hilt), B.2 (forming the middle), and R.A. (forming the blade), available only in the Japanese releases of Optimus Prime, Bumblebee, and Ratchet, respectively.
- As the Star Saber requires three "Pure"-type Energon Crystals to be classified as a Super Combo Weapon, all current versions of O.P. and B.2 can be substituted into the mix. Shadow R.A. has a "Fake Dark" Crystal though, so substituting him in reduces the combination to a mere Combo Weapon.