The Dweller in the Depths
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| "The Dweller in the Depths" | |||||||||
| Production code | 700-107 | ||||||||
| Production company | Sunbow Productions | ||||||||
| Airdate | October 30, 1986 | ||||||||
| Written by | Paul Dini | ||||||||
| Continuity | Generation 1 cartoon continuity | ||||||||
The Quintessons, as part of a new attempt at regaining Cybertron, unleash the most dangerous creature known.
- Japanese title: セイバートロン星の吸血鬼 (Cybertron-sei no Kyūketsuki, "The Vampires of Planet Cybertron")
- German title: Der Moloch der Tiefe (The Dweller in the Dephs)
Synopsis

On Cybertron, the Autobots have just successfully activated Perceptor's new power core, which should be able to triple the planet’s energy reserves. A short distance away in their ship, the Quintessons watch, disgusted by the success and progress of their creations. One Quintesson unveils a plan to release the Dweller, one of the early biomechanical experiments called Trans-Organics that were developed by the Quintessons that predate the creation of the Transformers. Unable to even perform rudimentary assignments, the Trans-Organics were unstable monsters that were eventually sealed away in a hibernation chamber deep within Cybertron.

On Chaar, Galvatron is lamenting his Decepticon troops' incompetence when the Quintessons beam down to talk. The Quintessons inform Galvatron about the Autobots' new power core but purposely give him the wrong location. Galvatron, Cyclonus and the Sweeps arrive on Cybertron, and break into the tunnel that leads below, soon pursued by Ultra Magnus, Arcee, Kup, Springer, and Wreck-Gar. The Decepticons uncover the storage chamber of the Trans-Organics, and accidentally release them from their stasis pods. The creatures soon attack both the Decepticons and the Autobots. In trying to escape, the Decepticons open another chamber and release the most powerful of the monstrous experiments: The Dweller, a giant energy leech that drains their energy and turns the Transformers into energy vampires. Running and fighting through the maze of chambers and tunnels in the dark depths of Cybertron, The Dweller quickly whittles down the Decepticon and the Autobot forces, leaving only Galvatron, Ultra Magnus, and Arcee to escape. Of course, many of the Decepticon losses can be attributed to Galvatron throwing his own soldiers at the Dweller to buy himself time.

The two Autobots make it back to headquarters where they update Rodimus Prime and Perceptor on the situation, the energy vampires bursting in right behind them. Perceptor determines that the vampires are suffering from a unique form of energy depletion and that a power surge should restabilize their levels. The Autobots form a chain with Perceptor at the end, who plugs himself into the console and they inject the crowd of vampire with an energon surge. The surge returns the Autobots and Decepticons to normal. Cyclonus, Scourge, and the other Sweeps quickly escape and rejoin Galvatron.
Meanwhile, The Dweller is breaking free to the surface, getting bigger from its energy absorption, and heading for Perceptor’s generator. Knowing that it will be unstoppable once it has attached itself to the generator, Perceptor uses the emergency eject switch to launch both the generator and The Dweller on top of it into space. Floating far away from Cybertron, The Dweller instead attaches itself to the ship of the Quintessons who started everything in the first place.
Featured characters
(Numbers indicate order of appearance.)
| Autobots | Decepticons | Others |
|---|---|---|
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Quotes

"You cringy, cowardly, weak willed fools! Why am I still stuck on this worthless, cosmic trashbin! Why have I not retaken Cybertron?! And most importantly, why have I been saddled with such a useless pile of junk for followers!"
"But mighty Galvatron, we humble Sweeps need energon to—"
"It's power you want?! I will give you power!"
- —Galvatron in his rage demands to know from Scourge and the Sweeps why he isn't victorious. He takes out his frustrations on them until the Quintessons arrive.
"Quintesson! You have betrayed us to the Autobots once before, why should I trust you?"
"Hehe. Please Galvatron, you can't lay one bad experience on the doorstep of the whole Quintesson race. Besides, how can you be so certain that we were the ones who betrayed you?"
"Well...you all do look alike."
- —Galvatron and the Quintessons as the latter manipulate the Decepticon leader as part of their new plan to retake Cybertron.
"YO JOE! Here I come to save the day. Ayay-yaya-yai! Can this be... the end... of little Wreck-Gar? Oh no!"
- —Wreck-Gar as he saves Ultra Magnus from the Dweller's energy-draining web only to be trapped in it himself and getting his energy stolen by the beast.

"Come on, Wreck-Gar, buddy! They haven't canceled your series yet!"
- —Springer as he frees the energy-drained Wreck-Gar from the Dweller's rear pouch.
"Be a good soldier and help him."
"Galvatron, NO! I beg you!"
- —Galvatron sacrificing another Sweep to the energy vampires that are approaching.
"I don't know what that thing is back in the tunnels, but even if it gets me as well, I'll die with the satisfaction that the universe will have two more Autobots to mourn!"
- —Galvatron as he is about to attack Ultra Magnus and Arcee, not realising that the Dweller is fast approaching.
Notes
- This isn’t the only energy leech to plague the Transformers as a few episodes later Tornedron will make an appearance in "Call of the Primitives".
Animation or technical glitches

- When the Dweller reaches Cybertron's surface, Streetwise and Groove are seen shooting at it, but Streetwise is colored like Optimus Prime and Groove is colored like Wheelie.
Transformer references
- The Quintessons remark on the Autobots' ancestors being the ones responsible for their exile from Cybertron.
Real-world references
- This episode is heavily influenced by the writings of H.P. Lovecraft.
- Wreck-Gar quotes the catchphrases of both the G.I. Joe team and Mighty Mouse.
Trivia
- When Cyclonus calls for help from Galvatron after the Dweller grabs him, Galvatron turns and...actually hesitates for a moment before moving on. Clearly he has some regard for Cyclonus, despite his usual disgust and abuse.


