G.I. Joe [Hawk; Wild Bill; Snake-Eyes; Storm Shadow; Stalker]; Cobra [Cobra Commander; Dreadnoks [Zarana; Road Pig]; Tele-Vipers; Techno-Vipers; Ninja Force [Slice; Dice; Red Ninjas]; Scarlett (double agent); Dr. Biggles-Jones (double agent)]; Baroness; Destro; Decepticons [Megatron; unnamed Decepticon]
As Destro, alongside the Baroness, makes the Silent Castle go topsy-turvy with Cobra in pursuit, Hawk sends in Snake-Eyes and Storm Shadow to exfiltrate them. The Joes are successful, but Snake-Eyes makes the hardest decision as he stabs Scarlett near her heart to grievously injure her, making her double agent status more legitimate. Megatron, in damaged mode from issue #79 of Transformers (Marvel, 1984 series), then makes a surprise visit to the castle, but things aren't all that bad (?) as the Commander has a talk with him.