Appearing in "The Mark of the Metazoid"
- Captain Marvel (Mar-Vell) (Main story and recap)
- Soviet Army (Main story and flashback)
- Sub-Mariner (Recap)
- Kree Empire
- Jeremy Logan
- Chester Fenton
- Olsen (First appearance)
- Unnamed doctor
- Supreme Intelligence (Referenced)
- Doctor Lawson (Referenced)
Races and Species:
- Kree (Main story and recap)
- Humans (Main story and flashback)
- Human-Kree Hybrids
- Atlantean-Human Hybrids (Recap)
- Vintar (Referenced)
- Milky Way (Main story and recap)
- Kree Galaxy (On-screen)
- Hala (Referenced)
Synopsis for "The Mark of the Metazoid"
Aboard the Kree vessel over the Earth, Mar-Vell is put on trial by Yon-Rogg for being "Un-Kree" by allowing the Sub-Mariner to win a battle and prevent the people of Earth from being infected with bacteria (as seen last issue). However, after much consideration, Ronan decides to judge Mar-Vell based on his future actions in being able to carry out his mission. He orders Mar-Vell to kill Mr. Logan the one man who may hint at Mar-Vell's identity. Mar-Vell gets out of killing Logan by suggesting that killing Logan would attract unwanted attention and erasing his memory would be better. Ronan agrees and allows Mar-Vell to see things his own way.
Back on Earth, Communist agents are plotting to capture Walter Lawson by sending their latest super-powered agent the Metazoid -- a being mutated to have the metabolism of 50 men -- to capture Lawson. Meanwhile, Mar-Vell returns to Earth and assumes his identity as Lawson. Returning to the Cape he deflects the suspicions of Carol Danvers about "Lawson's" activities. Traveling to the hospital where Logan is recovering, Mar-Vell is attacked by the Metazoid before he can erase Logan's memories. Changing into his Kree armor, Mar-Vell battles, but tries to avoid killing the creature.
However, when physical might, and his Uni-Beam prove useless against the Metazoid, Mar-Vell is forced to expose the Metazoid to an x-ray machine which proves to be lethal to the Metazoid. After the death of his attacker, Mar-Vell succeeds in using the memory eraser on Logan, and quickly flees when doctors stumble in upon Mar-Vell when he's completed his job.
- This issue contains a letters page, Mail it to Mar-Vell. Letters are published from Jeff Pierce, Shirley Gorman, Peter Sanderson, John Jeffers, Mikey Kellogg, Corbett Besco, and Gary Brown.
- In this issue, Captain Marvel continues to be disguised as the deceased Dr. Walter Lawson.