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Villains Wiki

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We are M.E.C.H., and I am Silas!
~ Silas revealing himself.
Bulkhead: You're not Breakdown.
Silas: But you are Bulkhead, and this is the last time you'll interfere with one of my operations.
Bulkhead: Silas?
Silas: In the flesh, in a manner of speaking.
~ Silas confronting Bulkhead for the first time with his Cybertronian body.

Arachnid: Cylas? Whatever have they done to you? But more importantly, thank you for freeing me.
Silas: No. Thank you.
~ Silas's last words thanking Arachnid for freeing him from his pain.

Silas is a recurring antagonist in the animated TV series Transformers Prime.

Former Colonel Leland Bishop, also known as Silas or "C.Y.L.A.S.", was a stone-faced leader of MECH, who had a lethal obsession with Cybertronian biology and technology. Proclaiming a desire of a new world order, Silas and his supporters systematically usurp Deception and Autobot agendas alike in the name of research and experimentation to further Project Chimera, the product of their horrific campaign.

He was voiced by Clancy Brown, who also played Hades in the God of War video games, Mr. Krabs in the SpongeBob SquarePants franchise, Undertow in Disney's The Little Mermaid II: Return to the Sea, Savage Opress in Star Wars: The Clone Wars, General McGuffin in Wander Over Yonder, General Wade Eiling in The Flash, Viking Lofgren in Bad Boys, Surtur in Thor: Ragnarok, Gunmar in Trollhunters, Harry Bordon in Cast a Deadly Spell, Parallax in Green Lantern, Lex Luthor in the DC Animated Universe and Gorrath in Megas XLR.


Former Colonel Leland Bishop was a member of Special Tactics with the US army with ambitious weapons idea which included Project: Damocles a space operated satellite. However the project was mothballed and Bishop was discharged as a result. Still bent on his weapons ideas, Bishop went rogue and funding the terrorist organization MECH recruiting other Special Tactics soldiers to assist him and adopted the name of Silas.

Silas's first known action to obtain more powerful weapons was an attempt to acquire a highly volatile nuclear weapon from Agent Fowler. However the attempt was foiled by the Autobots. Silas however took a scan of Optimus Prime's body and fled. Later Silas abducted Breakdown and took a further look into his body only to lose him to Bulkhead. Silas also attempted to gain Cybertronian bio tech by teaming up with Airachnid but it failed when Fowler showed up with an army of attack helicopters. Silas did however get a look at Airachnid scanning Fowler's helicopter to which he was impressed.

Much later Silas struck again and stole Bumblebee's T-cog to install it into their own robot but failed. Teaming up with Starscream to get Energon supplies they almost succeeded but Bumblebee showed up to reclaim his T-cog. Upon doing so, Silas betrayed Starscream and stole his T-cog.

Later with Starscream's T-cog Silas created Nemesis Prime, a mindless robot to control at will. He used the robot to frame Optimus Prime but the real Optimus Prime and Agent Fowler teamed up to stop both Nemesis and Silas and crushed Silas's body under it.

After being mortally injured, he was infused with Breakdown's body in order to save his life. Redubbing himself as CY.L.A.S., or CYbernetic Life Augmented by Symbiosis, the first thing he did was to kill his own men by Breakdown's shoulder plasma cannon and proceeded to join the Decepticons with a little bargaining chip. But when it failed, Megatron allowed Knock Out to dissect him as long as he wants, which the latter commented that his old friend would be "tickled".

His fate was later revealed as Knockout was using him to test a Synthetic Energon formula. However, under the advice of Starscream, he was infused with Dark Energon in order to create the perfect warrior. This experiment badly backfired, transforming CY.L.A.S. into an Energon-hungry Terrorcon. CY.L.A.S. would meet his end when he freed Airachnid in his attempt to take away her Energon and was killed by her. In his dying words, he thanked her for putting him out of misery, though the latter scoffed it with "Whatever". It was revealed he infected Airachnid before he died.


  • MECH Surgeon
  • Five unnamed MECH soldiers
  • All MECH soldiers surviving (including MECH Navigator and MECH 1) offscreen
  • Numerous counts of unnamed people
  • Numerous counts of Decepticons
  • Numerous counts of Insecticons (indirectly caused)
  • Airachnid



  • Silas is arguably one of the most evil and vile characters in all of Transformers media, due to how he has slaughtered his men and was willing to subject Transformers (both Autobots and Decepticons) to extreme torture to satisfy his ambitions of power, even willing to betray his fellow humankind in a failed attempt to join the Decepticons.

External Links

  • Silas on the Pure Evil Wiki.


            Transformersprimelogo.png Villains

Nemesis Crew: Megatron | Starscream | Soundwave | Shockwave | Knock Out | Breakdown | Airachnid | Predaking | Dreadwing | Vehicons | Insecticons | Skyquake | Barricade | Rumble & Frenzy | Trypticon | Thundercracker | Skywarp
Combaticons: Onslaught | Brawl | Swindle | Vortex | Blast Off | Bruticus
Steeljaw's Pack: Steeljaw | Thunderhoof | Underbite | Clampdown | Fracture | Quillfire | Airazor | Divebomb | Groundpounder | Overload | Bisk | Springload
Glowstrike's Crew: Glowstrike | Scorponok | Saberhorn | Kickback
Scavengers: Clawtrap | Paralon | Scatterspike | Thermidor
Starscream's Crew: Starscream | Shadelock | Roughedge | Razorhorn
Stunticons: Motormaster | Heatseeker | Wildbreak | Dragstrip | Slashmark
High Council: Galvatronus | Cyclonus | Skyjack | Treadshock | Riotgear
Other Decepticons: Megatronus | Hammerstrike | Chop Shop | Terrashock | Filch | Minitron | Ped | Malodor | Nightstrike | Vertebreak | Octopunch | Headlock | Scowl | Zizza | Pseudo | Backtrack | Ransack | Polarclaw | Crazybolt | Slicedice | Razorpaw | Swelter | Glacius | Torpor | Simacore | Axiom | Theorem | Bludgeon | Clout | Anvil | Hammer | Silverhound | Back | Forth | Stockade | Major Mayhem | Crustacion | Ragebyte | Zorillor | Boostwing | Jacknab | Pilfer | Shadow Raker | Nightra | Flamesnort | Wingcode

Silas | M.E.C.H. Surgeon | Nemesis Prime

Scraplets | Thaddeus Morocco | Terrorcons (Terrorcon Cliffjumper) | Unicron | Thunderwing