"Titans East - Part 1" is the season finale of Season 3 and is therefore an important 'Cyborg arc' episode. It is the thirty-eighth episode of Teen Titans series and the twelfth episode of Season 3.
Brother Blood stands on a hilltop overlooking Steel City. He tells his cloaked followers that he will build a new academy, this time with his former student and apprentice Cyborg. Blood confronts a chained Steamroller and bends him to his will. Blood declares that Steamroller will help him find students for his new school.
Cyborg heads to Steel City on Robin's orders, in order to assist in the formation of the Titans East team. He arrives at their incomplete tower, where the Titans East are having their own personal disputes. Cyborg quickly calms them down and, with his guidance, try to finish completing their tower. They are interrupted by the appearance of Steamroller, who is attacking a local mine. The six of them tackle Steamroller, the first fight they had ever fought together as a team. At first the Titans East don't work together, and their attacks fail and hit each other instead. During the fight, Cyborg is attacked by Steamroller, who attaches a cable into Cyborg's circuits. Cyborg kicks him away and, with Cyborg's instructions, the Titans East successfully work together as a team and defeats Steamroller.
Now working as a team, the Titans East, along with Cyborg, they completed the Titans East Tower in no time. Unbeknownst to them, Brother Blood had actually used Steamroller as bait in order to steal the security keys for entering the Titans East Tower from Cyborg. Cyborg turns on some disco lights and reveals a disco ball, and announces that "It's party time"! Cyborg tries to invite Bumblebee to a dance, but Más y Menos interrupts them and insist on playing video games with Cyborg. He is excused from playing when Robin contacts Cyborg and informs him of Professor Chang's escape from prison. Robin tells Cyborg to return to Jump City, and Cyborg reluctantly agrees to this plan. Más y Menos try to dissuade him from leaving, but Cyborg insists it is for the best. As he is about to board the T-Car, Aqualad and Bumblebee reveal that they want Cyborg to stay as leader of Titans East. Tempted by the offer, Cyborg gets no time to give a response when suddenly the power goes out and the security in the tower goes down. They are ambushed by Brother Blood's purple cloaked followers, who attack them with a sonic cannon built into their arms. Bumblebee pulls off the hood of one of them, revealing them to be robotic clones of Cyborg.
Left outnumbered, the Titans East split up to find the Main Ops room, where they can turn on the security in the tower. Each of them are ambushed by the Cyclones and taken captive. Meanwhile, Cyborg arrives at Ops, where he runs into Brother Blood. Blood tells him that the Tower will be the new H.I.V.E. Academy. Brother Blood attacks Cyborg, dodging all his attacks and fighting him with ease. Blood reveals that even though he no longer has Cyborg's blueprints, he has a photographic memory, enabling him to remember vital parts of Cyborg's blueprints. This is what allowed Blood to build the Cyclones using Cyborg's technology. Blood rips through Cyborg's circuitry, desperate to find the piece which allows Cyborg to resist Blood's mind controlling powers. Blood digs too deep into Cyborg's circuit, finally hitting his power cell, which shoots a large burst of energy at Blood, throwing him across the room. Before Brother Blood can attack Cyborg again, Cyborg activates the security systems, spawning many lasers around the room, each of them firing at Blood. Blood is knocked out the window and falls into the sea. Cyborg's power cell finally runs dry and he powers out.
Cyborg regains consciousness and sees the Titans East bearing down at him. They tell him that they are all right, and that they were saved after Cyborg reset the security in the tower. Speedy asks him again if he wishes to stay as leader of Titans East, but once again they are interrupted, this time by Robin, who tells him that the Teen Titans need him back. Cyborg apologetically replies that the Titans East "need him more". Cyborg hangs up on Robin and officially announces to the Titans East that he accepts the offer to stay and be leader.
After Cyborg retires to his room for some rest, Aqualad pulls out a H.I.V.E. Communicator and informs Brother Blood that they have achieved his objective, with Blood's voice praising them. The eyes of the five turn red and glow in the darkness, revealing that they've been brainwashed.
- The H.I.V.E. robots' moves and fights are similar to Slade's robot soldiers.
- Brother Blood's attack on the Titans East Tower is similar to Slade's attack on Titans Tower in "Titan Rising". Except Brother Blood's attack was successful. Possibly because Slade didn't show up at the attack, while Brother Blood did.
- Cyborg's "theme song" has become a popular Internet meme.
- This is the third appearance of Bumblebee. She first appeared in this season's opener, "Deception." She later appears in "Wavelength."
- The photograph of Más y Menos shows the pair posing in front of Tikal Temple I, a Mayan temple in Guatemala. Its roof comb appears to be partially cropped off.
- When Robin called Cyborg on the road, Cyborg complained that it was hailing. When we see Cyborg continue to drive after the call ends, it is clear out.
- The photograph which Menos held disappears as he hops off Cyborg's shoulder.
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