This is one of only a very few Star Trekcomics ever to feature a non-canon secondary character on the cover without any members of the main cast being present. The image depicts Engineer Debbie Upton on her fateful spacewalk.
Canon characters listed below are linked to the main article about them. Non-canon characters are not linked, but those that recurred, appearing or being mentioned in more than one story, are defined further in DC TOS volume 1 characters.
The Federation President. The President contacted the crew of the Enterprise-A personally shortly thereafter their light-marker visit to have them investigate the current condition of Gamma Trianguli VI.
Starfleet commander, with yellow uniform insignia patches, assigned to bridge command on the ship's night watch. Codobach was an alien with lizard-like green skin, bulbous pink eyes and a toothy snout.
Grosdun
Starfleet pilot, with gray uniform insignia patches, assigned to the helm on the ship's night watch. Grosdun was an alien with pink skin, and a bulbous cone-shaped skull.