Loose Ends, Part 3

The Wreckers join up with some old allies on Earth, while Optimus Prime and Bludgeon gather their forces.

Synopsis

(Characters in italic text appear only in flashbacks.)
(Numbers indicate order of appearance.)

Unnamed and not drawn in detail for fear of legal terrors, Circuit Breaker can be spotted flying into battle alongside Fortress Maximus on page 9.
The Decepticon casualties of the Underbase Saga are revealed to have been gathered up by the Autobots and kept in the Ark.
The precise identity of the former owners of Argus Base is not divulged (and there are a few candidates in Marvel continuity, such as RAAT), but the presence of a large eagle-head sigil on the conference desk seems to implicitly identify the team as G.I. Joe, who gained a similar avian symbol with 2009's Rise of Cobra series.
The robotic battlesuits lined up in Argus Base are based on Buster's battlesuit from the Marvel UK story, "Robot Buster!".
The planet Torkulon originated with the Generation 1 cartoon episode "Webworld", but aside from having native lifeforms that include vaguely spidery-thing that have something to do with brains, this depiction of the world seems to owe virtually nothing to its cartoon predecessor.
The term "Scramble City" has been used for a bunch of things in its time, but this is the first time it's been used as the name of a city on Cybertron.

Cover A: Circuit Smasher zaps the Wreckers, by Andrew Wildman and Jason Cardy.
Cover B: The Ex-Bots loom over Kup, by Guido Guidi.
Cover RI: Zombie Starscream, Razorclaw and Blitzwing stop through Washington, by Geoff Senior and Josh Burcham.