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Klaus Voorhees (Earth-616)

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HelpKing Cobra
King Cobra 001
Information-silkReal Name Klaus Voorhees
Information-silkCurrent AliasKing Cobra
Information-silkRelativesPiet Voorhees (King Cobra) (nephew)
Information-silkAffiliationFormerly Mister Hyde's partner, Serpent Squad, Serpent Squad, Serpent Society, Thunderbolts
Information-silkBase Of OperationsSerpent Citadel, New York
Information-silkIdentityPublic Identity
Information-silkCitizenshipAmerican, formerly Dutch
Information-silkMarital StatusSingle
Information-silkOccupationProfessional criminal, former research assistant
Information-silkEducationHigh school graduate with vocational training
Information-silkHeight5' 10"
Information-silkWeight160 lbs (73 kg)
Information-silkOriginKing Cobra gained his powers through a mixture of irradiated cobra venom and an experimental anti-toxin.
Information-silkPlace of BirthRotterdam, Netherlands
Information-silkCreatorsStan Lee, Don Heck
First Appearance

Quote1 I've been bitten by a radioactive cobra??!! Quote2
-- Klaus Voorhees src


Cobra 002

Klaus Voorhees was an ex-convict working with the humanitarian medical researcher Professor Ezekiel Shecktor in India on a universal anti-toxin for snake venom. Jealous of Shecktor's success, Voorhees plotted to kill him and make the murder look like an accident. Hence, Voorhees induced one of the cobras kept in the laboratory to bite both Shecktor and himself. Voorhees planned to use the universal anti-toxin to save himself from death. Unknown to Voorhees, the cobra had been irradiated. The combination of the radioactive venom in his bloodstream and the experimental anti-toxin which he used created a mutagenic catalyst which gave Voorhees certain cobra-like powers.[1]


Assuming the costumed guise of the Cobra, Voorhees used his new found superhuman abilities for crime. Cobra travelled back to the United States, initially defeating Thor in their first encounter but Thor escaped after returning to Don Blake.The Cobra then went to the offices of Dr. Andrews and kidnapped Jane and climbed out of the window. Assuming he defeated Thor he let his guard down which allowed Thor to strike, Cobra dropped Jane and escaped as Thor saved her life.[1]

Teaming Up with Mr. Hyde

Cobra began his long time partnership with another of Thor's adversaries, Mister Hyde. But the team of the Cobra and Mister Hyde were defeated repeatedly, first by Thor[2][3][4][5] and later by the costumed crimefighter Daredevil. Hyde and Cobra were among the many costumed menaces assembled by Doctor Doom to disrupt the wedding of Reed Richards and Susan Storm[6].

Hyde and the Cobra next battled Daredevil.[7][8][9] He then teamed with the original Jester and Mr. Hyde against Daredevil[10].

Teaming with the Mr. Hyde again, Cobra attempted to acquire Cagliostro's serum.[11][12]

He was next employed by the Purple Man, and battled Daredevil in an arena alongside Mr. Hyde, the Jester, and the Gladiator.[13]

Serpent Squad

Cobra served as a lead of the Serpent Squad with the Eel and the first Viper (Jordan Dixon). With the Serpent Squad, he attacked Captain Ametica and the Falcon. [14] He subsequently joined the second Serpent Squad led by Viper (Madame Hydra) after Jordan Dixon's death. They battled Steve Rogers in his Nomad identity, and then became involved in an attempt to raise the continent of Lemuria.[15][16][17] He became trapped with the second Viper, and his cowardice earned her enmity.[18]

The Raft

The Cobra came to believe that his criminal career would fare more successfully if he no longer acted in partnership with Hyde. Hence, when the Cobra made an escape from prison on Ryker's Island in New York, he refused to free Hyde, who was also imprisoned there, despite Hyde's pleas. Infuriated, Hyde vowed vengeance and has since made attempts on the Cobra's life.[19]

Serpent Society

After operating independently for a time, Voorhees accepted an invitation to join the Serpent Society formed by Sidewinder.[20] When Sidewinder retired, Voorhees changed his codename to King Cobra and became the leader of the criminal organization.[21]

Hyde briefly helped the symbiote-bonded Toxin track Cobra after a prison escape by providing a piece of skin for the symbiote to track.[22]


After passing of the Superhuman Registration Act Cobra was forced to join the Thunderbolts and trained by Swordsman (Andreas Strucker), along with the Unicorn and the Ennforcer; Ox.[23] However they later rebelled and Cobra along with Mauler, Firebrand and Mr. Hyde who attacked Yellowjacket, Constrictor and other Initiative staff and trainees at Camp Hammond. [24]

Cobra is a regular visitor of the Bar with No Name. [25]

... [26][27]


Cobra and the Serpent Society are one of the many villains the X-Men took down while protecting San Francisco. They were robbing a bank until they are defeated by Hope Summers. [28][29][30]

Piet Vorhees

He has passed the Cobra identity on to his nephew Piet Vorhees. [31]


  • Elasticity: King Cobra possesses certain unusual physical powers derived from his mutagenically altered physiology which among other things help him simulate the movement of a snake. All of the bones in his body, including his skull, are malleable and his muscle tissue is exceedingly resilient, making his body very flexible and pliant. It is nearly impossible for him to break a bone or tear a muscle. Hence, the Cobra can survive impacts that would kill or inflict major injury upon a normal human being with little or no injury to himself.[33][34] [35][36][37][38][39][40]
    • The Cobra's flexibility enables him to slither into and out of very tight and small places. Through compressing his body, the Cobra can fit into any hole or slot down to four inches in diameter.[33][34] [35][36][37][38][39][40]
    • By using his flexibility to wrap himself about a victim's body and then exerting his full strength, the Cobra traps that victim within his "Cobra Grip." No normal human being can break free of his grip unless he or she is extraordinarily well trained in fighting, and even many superhumanly strong beings would have difficulty freeing themselves.[33][34] [35][36][37][38][39][40]
    • The Cobra has a great degree of independent control over every muscle in his body, enabling him to slither across the ground, without using his arms and legs, simply by muscle contraction. He is extremely quick, capable of moving up to 50 miles per hour for several seconds by this method. His agility and speed make him very difficult to catch and hold onto.[33][34] [35][36][37][38][39][40]


Serpent Saucer.


King Cobra has developed a number of special weapons to enhance his cobra-like powers. His costume is specially treated with a silicon and graphite-dust compound, making it extremely slippery. He has also designed special chemical suction devices for his fingers and feel, enabling him to stick to walls and ceilings. In the compartment behind his articulated chest armor is a fifty-foot long coil of steel cable that can be shot by means of a powerful spring.

From his spring-loaded device the Cobra can shoot a number of deadly projectiles. His "cobra-bite" missiles contain cobra venom. The venom from a single such missile can kill average-size, normal human being in six minutes. It takes more than one venom-filled missile to have the same effect on a superhumanly strong human being. The Cobra has also used projectiles carrying smoke, nerve gas, and a special substance that induces temporary blindness.

Discover and Discuss


  1. 1.0 1.1 Journey Into Mystery #98
  2. Journey into Mystery #105
  3. Journey into Mystery #106
  4. Journey into Mystery #110
  5. Journey into Mystery #111
  6. Fantastic Four Annual #3
  7. Daredevil #30
  8. Daredevil #31
  9. Daredevil #32
  10. Daredevil #61
  11. Daredevil #142
  12. Daredevil #143
  13. Daredevil #153
  14. Captain America #163
  15. Captain America #180
  16. Captain America #181
  17. Captain America #182
  18. Captain America #184
  19. Peter Parker, The Spectacular Spider-Man #46
  20. Captain America #310
  21. Captain America #367
  22. Toxin #1
  23. Thunderbolts #104
  24. Avengers: The Initiative #13
  25. Free Comic Book Day Vol 2007 #Spider-Man
  26. Iron Man: Legacy #7
  27. Iron Man: Legacy #8
  28. X-Men: To Serve and Protect #2
  29. X-Men: To Serve and Protect #3
  30. X-Men: To Serve and Protect #4
  31. White Tiger #1
  32. Official Handbook of the Marvel Universe A-Z hardcover Vol. 6
  33. 33.0 33.1 33.2 33.3 Official Handbook of the Marvel Universe #2
  34. 34.0 34.1 34.2 34.3 Official Handbook of the Marvel Universe Vol 2 #3
  35. 35.0 35.1 35.2 35.3 Official Handbook of the Marvel Universe Vol 2 #11
  36. 36.0 36.1 36.2 36.3 Official Handbook of the Marvel Universe Vol 3 #6
  37. 37.0 37.1 37.2 37.3 Official Handbook of the Marvel Universe Master Edition #4
  38. 38.0 38.1 38.2 38.3 All-New Official Handbook of the Marvel Universe Update #2
  39. 39.0 39.1 39.2 39.3 New Avengers Most Wanted Files #1
  40. 40.0 40.1 40.2 40.3 Official Handbook of the Marvel Universe A-Z #6
  41. Spider-Man Comics Weekly #16
  42. Spider-Man Comics Weekly #24
  43. Spider-Man Comics Weekly #23
  44. Spider-Man Comics Weekly #27
  45. Spider-Man Comics Weekly #28
  46. Marvel Tales Vol 2 #12
  47. Astonishing Spider-Man #81
  48. Thor #158
  49. Captain Marvel #39
  50. Avengers #147
  51. Marvel Team-Up #84
  52. Thor #293
  53. Marvel Two-In-One #66
  54. Captain America #261
  55. Captain America Vol 6 #19

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