"Calling All Titans!" is the sixty-third episode of the Teen Titans series and the eleventh episode of Season 5.
The Titans are riding back to the Tower in the T-Ship when Robin announces, to Beast Boy's disappointment, that they have one last mission to execute: In order to protect other young heroes worldwide more efficiently, Robin has decided to establish a communication network by giving a Titans Communicator to each. Despite Beast Boy's misgivings, the Titans split up and go on their separate missions, unaware that the Brain is using the captured communicator to monitor their progress to initiate the end-game.
Beast Boy climbs a tall mountain to contact Jericho, while Starfire aids Argent in repairing a leaking dam in New Zealand. Robin contacts Bushido, who is fighting a group of ninjas, while Cyborg goes to a wrestling arena where Pantha is battling. She grabs Cyborg, thinking he’s a wrestler, and they fight briefly until Cyborg manages to inform her of Wildebeest's grim fate at the Brotherhood's hands, leaving her with a communicator. In another dimension, Raven meets with Herald and hands him a communicator.
Robin heads back and initiates a test of the communications network, contacting all the members from around the globe, but this only helps the Brain to pinpoint his targets more precisely. Immortus and his soldiers attack Argent while the Titans attempt to rejoin, and Robin sends Starfire to help her, but then more emergency calls come in. The Brain has initiated a simultaneous sequence of coordinated attacks against the Titans and their allies, who are currently spread too thin to aid each other effectively and thus become easy targets for the Brotherhood's cohorts:
- Argent is assaulted by General Immortus and his army; Starfire arrives to find Argent gone but Killer Moth and Kitten waiting for her
- Gnarrk and Kole fight Gizmo and Billy Numerous at the Arctic, and Cyborg is intercepted by Mammoth when he arrives to the duo's aid
- Más y Menos are pursued by Johnny Rancid and separated by Cinderblock; Raven comes to help, but is forced to engage Kyd Wykkyd and Psimon
- Aqualad is attacked Plasmus and Trident under the sea; Beast Boy is intercepted by Kardiak when he is sent to aid, and Tramm is hindered by XL Terrestrial
- Bumblebee is ambushed by Punk Rocket and Angel
- Bushido brawls Katarou in Japan
- Speedy is chased by Cheshire
- Pantha is taken on by Atlas and Adonis
- Jericho evades Fang and Private HIVE
- Herald is attacked by See-More and Warp in his own dimension
- Killowat battles Control Freak and the Puppet King
- Lightning duels Overload
- Thunder tries to repel Steamroller and I.N.S.T.I.G.A.T.O.R.
Robin is helpless and despondent when Hot Spot arrives, but "Hot Spot" brutally attacks Robin, revealing himself to be Madame Rouge. When she gloats about the success of the Brotherhood's plans, Robin deduces that the Brain has tapped the communicators, and manages to slow Rouge down long enough to warn the others and rig his communicator to self-destruct, short-circuiting the rest, before he is captured.
While a few of the Titans have proved triumphant in their individual battles, Rouge brings Robin back to the Brotherhood’s lair, tied up. He, along with Aqualad, Speedy, Argent, Menos, Tramm, Thunder, Lightning, Killowat, and Bushido are all added to the villains' collection. After Robin is captured, the Brain starts gloating: "I have captured the king. Your pawns cannot save you. You have lost."
- Titans East
- Titans North
- Titans South
- Honorary Titans
- Brotherhood of Evil
- H.I.V.E. Academy
- Even though Tramm and Aqualad were defeated at the same time, Tramm was not seen as one of the defeated Titans at the end of the episode. In fact, the only defeated Titans shown were Aqualad, Menos, Argent, and Speedy .
- In "X", Professor Chang froze Starfire, Cyborg, Raven, and Beast Boy in tubes; it's possible this is the same technology used to flash-freeze the rest of the Titans in this episode.
- Perhaps very obviously, the scene where Robin freezes Madame Rouge and smashes her into several pieces, then Rouge reassembling herself through liquid-form, is a parody of the famous scene marked by the quote "Hasta la vista, baby" where the Terminator freezes the T-1000 until it reassembles itself through liquid-form in Terminator 2: Judgment Day.
- In the chart of all the Titans, Wonder Girl appears as one of the Titans, even though she never appeared in the series at all except for minor cameos. Also in the chart, Hot Spot was present even though he was captured in a previous episode.
- It is unknown why Beast Boy, who had a lot of trouble climbing the mountain as a bighorn sheep to reach Jericho, did not just transform into a bird to fly up.
- For unknown reasons, 20 members of the Brotherhood of Evil didn't participate in capturing Titans : The Brain (who is the leader and not a combatant), Monsieur Mallah (who is his bodyguard), Professor Chang (who isn't a combatant), Malchior, Mad Mod, Mumbo, Wintergreen, H.I.V.E. Headmistress, Andre LeBlanc, Wrestling Star, Master of Games, Mother Mae-Eye, Ding Dong Daddy, Phobia, The Source (who only appeared in "Homecoming - Part 2"), Bob (who only appeared in "Homecoming - Part 2"), Witch (who only appeared in "Homecoming - Part 2"), Red X (who defected at this moment), Jinx (who defected at this moment) and Doctor Light (who probably defected at this moment).
- Adonis' suit in this episode is blue, instead of red. He still used his blue suit in "Titans Together".
- When Mallah is moving the chess pieces, he moves Starfire as the queen, and the Brain titles Robin as the king.
- The villain I.N.S.T.I.G.A.T.O.R. hasn't spoken in the series and no one is written down for voicing him. However, this episode shows that he has yelled once, before capturing Thunder.
- Kid Flash, Jinx (which the Titans haven't found out she's an Honorary Titan, until "Titans Together"), Melvin, Teether, Timmy, Bobby, Wildebeest (who was already captured), Red Star, Hot Spot (also captured already), and Wonder Girl (who never made an actual appearance) are the only Honorary Titans that were never seen in battle or fighting any villains.
- When Killowat, was facing Control Freak, the fact that he was summoning TV characters out TV was like Pokémon sends them out their balls.
- The Creature From Jones Lake, Seven-Gorn-Seven, Off-World Outlaw, and Baron Ryang have returned in this episode and they were very weak against Killowat.
- This was the first episode to air in 2006.
- When Mallah turns on the light to see two heroes part of the flash-frozen collection, Hot Spot and Wildebeest were facing the left side, but when the scene closes up, both of the frozen heroes were facing the right side. Later, when Robin saw Wildebeest and Hot Spot frozen, both were facing the left side, again.
- After Monsieur Mallah resets the chessboard, The Brain says, "Shall we play a game?" We can see the chessboard is reset incorrectly. The pieces are in the right positions, but the board is rotated 90˚. This is evident because the queens in chess are supposed to start on squares corresponding to their colors.
- As Control Freak summons characters with his remote, Baron Ryang appears to be taller than Off-World Outlaw, even though they were previously depicted as the same size.
- When Steamroller and I.N.S.T.I.G.A.T.O.R. broke through the brick wall to capture Thunder, they were both the same size. Strangely enough, when Thunder briefly stunned them, Steamroller is taller than I.N.S.T.I.G.A.T.O.R.
- Throughout Steamroller's return in the episodes he appears in, his eyes were still red (his eyes were normal before he was brainwashed by Brother Blood in Season 3 and before Blood's defeat in his final appearance). However, his eyes were normal when he saw his partner (I.N.S.T.I.G.A.T.O.R.) capturing Thunder.
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