Dark Star Saber
- The Dark Star Saber is a weapon from the Prime portion of the Aligned continuity family.

The Dark Star Saber is a sword made from pure Dark Energon. Intended to be a dark counter part of the Star Saber itself, this blade possesses all the powers of the original blade and is even stronger than its counterpart.
Fiction
Prime cartoon
Megatron, after securing the arm of a dead Prime, used the Forge of Solus Prime to craft a counterpart to the Star Saber out of a huge chunk of Dark Energon. Megatron first brought the blade into action after the decoding of the next Iacon relic in Egypt, and used it to make fools out of Arcee and Smokescreen. The waves of energy it created threw Smokescreen against a pyramid. When Optimus arrived with his own Star Saber, the two engaged in battle, but the Dark Star Saber would prove to be stronger, breaking Optimus's sword. Alpha/Omega
He took the sword with him to Cybertron to find the Omega Lock. He got the opportunity to use it when the Autobots showed up, and Optimus attacked him with the reforged Star Saber. It also proved capable of destroying the Spark Extractor when Smokescreen used the device against his men. Regeneration
After Megatron began using the Omega Lock to cyberform Earth, Optimus charged at him with the Star Saber. Megatron managed to counter his first blow using the Dark Star Saber, only for Optimus to slice his sword arm off at the elbow. Both sword and arm were subsequently caught in the explosion when Optimus destroyed the Omega Lock. Darkest Hour
The Decepticons recovered the Dark Star Saber at some point and stored it in the vault. When Predaking turned on the Decepticons, Megatron decided to test it against him. Predaking found him before he could reach the vault, however, and Megatron was forced to outwit him without its might. Knock Out brought the sword moments too late for it to be of use against Predaking, but just in time to be used against an imminent Autobot attack on the ship. Synthesis
![]() Plot details for Deadlock (episode) follow. |
He got the chance to employ it against Optimus when the Autobot leader attacked the warship, giving Megatron the upper hand in their duel. When Megatron died, the Dark Star Saber fell from his grip and plummeted towards Earth. Deadlock
Toys
Prime

- Final Battle Megatron (Voyager, 2-25-2013)
- ID number (Gabu): M-18
- ID number (Baru): M-19
- ID number (Dai): M-20
- Part of the eleventh and final assortment of TakaraTomy Prime toys, the "Dark Energon Saber" is a smoky-translucent-black redeco of the Arms Micron Dark Matter Calibur sword, and the three Arms Microns (now named Shadow Gabu, Shadow Baru, and Shadow Dai) that form the weapon. The Dark Energon Saber is only available with Final Battle Megatron.
Notes
- Unlike the regular Star Saber, the Dark Star Saber does not need to be held by a Prime to activate its powers.
Foreign names
- Japanese: Dark Energon Saber (ダークエネルゴンセイバー Dāku Enerugon Seibā)


