|Battlegrounds, Part 2|
|Season 1, Episode 26|
|Air date||September 12, 2015|
|Written by||Adam Beechen|
|Directed by||Vinton Heuck|
Battlegrounds, Part 1
Overloaded, Part 1
(The Start Of Season 2)
Battlegrounds, Part 2 is the twenty-sixth episode of Transformers: Robots in Disguise and the last episode of season 1.
Reunited with Optimus Prime, Bumblebee and his team must use everything they’ve learned to stop the annihilation of both Earth and Cybertron.
As the Autobots pick themselves up following Megatronus' arrival, Drift contacts Fixit to find out who the newcomer is and Fixit is able to tell him that it was Megatronus, who is one of the original Thirteen Primes until he betrayed them and destroyed Solus Prime. While Optimus Prime faces Megatronus, Bumblebee and Drift went to free Windblade, Sideswipe, and Strongarm, only to be hit be a deflected blast from Optimus's Prime Decepticon Hunter. Optimus is prevented from going to their aid by Megatronus, who proceeds to attack him.
Over on the bridge, Denny and Russell pose as fake filmmakers to try and cover up the giant robot battle; however, their attempts to get a police officer to clear the area are hampered when the officer turns out to be a wannabe screenwriter.
As Megatronus attempts to terminate Optimus with his drill, Grimlock grabs onto the drill, only to be slung at Drift. Jetstorm and Slipstream prevent Megatronus from moving in on Drift and the other Autobots long enough for Optimus to get up and resume combat. Though Optimus boasts the power of the Primes, Megatronus says he has been granted power too, and soon sends Optimus flying into the river. Megatronus moves to pick up a staff, but Windblade manages to break free from her bonds and immediately opens fire on him. Bumblebee runs to attend to Optimus, leaving Drift to free Sideswipe and Strongarm. With Windblade down, Drift and the two freed Autobots attempt to stop Megatronus reaching the staff, only to be seen off with a barrage of firepower and are then attacked by the other Decepticons.
Megatronus picks up the staff and reveals the extent of his plan to Steeljaw: the staff will draw the remanents of the Anti-Spark from Unicron, who was still in the Earth's core, then summon the AllSpark from Cybertron. Steeljaw realizes this will destroy both planets. As the staff creates a shaft of energy that lances into the sky, the enraged Steeljaw attacks Megatronus but is soon thrown to the side. Not fancying their chances, the other Decepticons flee, only to run into the Autobots. As Sideswipe and Strongarm draw their Decepticon Hunters, their weapons touch and momentarily surge with power. A fight ensues between the two sides. Meanwhile, as Bumblebee remained with Optimus, Optimus's wound heals as it magically closes up.
On the bridge, Denny is still having no luck convincing the officer to clear the area.
Optimus awakens and identifies the staff Megatronus is carrying as a spark fuser. Steeljaw continues fighting Megatronus, but is tossed into the distance shortly before Optimus and Bumblebee return to the fight. Megatronus blasts Optimus, sending Bumblebee flying, and the Autobot takes advantage of his momentum to take out Underbite. The rest of the Decepticon team is taken out in short order, leaving only Megatronus and Optimus locked in combat.
After turning their Decepticon Hunters into the same forked sword shape as the Prime Decepticon Hunter, Bumblebee, Sideswipe, and Strongarm are endowed with new armor. With the combined power of the Hunters, they give Megatronus a brief blast, but has little effect. Bumblebee has a new plan and contacts Optimus over the comm. It may be already too late, as the AllSpark appears through a portal in the sky and moves down towards Megatronus. Optimus, not willing to give up to easily, flings his Decepticon Hunter at the spark fuser, thus destroying device. The AllSpark returns to the sky and the Anti-Spark to the ground. Megatronus starts attacking the Autobots furiously with his armed guns, mainly at Optimus.
Denny is still trying to convince the officer to clear everyone from the area when a stray blast destroys the officer's hat. The officer is suddenly very keen for everyone to evacuate.
While Optimus keeps Megatronus busy, Drift, Windblade, and Sideswipe head up to the top of the Crown City Colossus and begin hacking the arm. Megatronus blasts Optimus and was about to finish him off when Grimlock joins in. Between Grimlock, Optimus, and the other Autobots, Megatronus is kept busy until the arm of the immense statue falls on him.
This doesn't stop him, and he lifts up the enormous arm. Bumblebee, Sideswipe, and Strongarm combine the power of their Decepticon Hunters again, unleashing a powerful blast of energy on him, seemingly destroying Megatronus. When the smoke clears, there is only a crater where Megatronus stood. With the news that emergency crews are on the way, Bumblebee finally manages to nail a rallying cry, and the Autobots rev up and roll out.
Back in the scrapyard, the captured Decepticons are all safely placed in stasis pods. Though Bumblebee says the other Autobots are free to go back to Cybertron, the other Autobots are all in favor of staying with Bee. Optimus says he's no longer needed, but Bumblebee insists he should stay. Optimus agrees so long as he's Bumblebee's equal rather than his leader. He places his hand on Bee's shoulder as Bumblebee looks on at his team, he states that he can work with it.