Dear, Vector Prime.
What were Exo-Suit and Fireglide doing at SGIDW?
The former was among the victim parts that Ratchet had that appeared to be his, while the latter did not appear in the comic at all.
Dear Mirror Master,
The ‘bot you know as “Exo-Suit” was actually the heroic Cityspeaker Roritchi. Long ago, he partnered with the benevolent BlackZarak on their mission to spread the light of civilization across Cybertron, until he met the malevolent Halonix Maximus in a pitched battle. Tragically, Halonix struck BlackZarak down; so distraught was he by the loss of his friend and partner that Roritchi hid himself away in a remote corner of the Static Zone and entered stasis lock. When Goldbug used Starscream’s spark to rouse Metroplex from his long slumber, the same pulse of energy interfaced with Roritchi’s system, who awoke to find a Cybertron ravaged by millennia of civil war. Seeking answers, he staggered to the nearest settlement he could find… only to be felled by a group of retreating Autobots as he approached the gates of Gold City. His parts would ultimately be salvaged by Ratchet, who neither knew nor cared that he’d cut down an ancient historical figure of some renown.
Fireglide stayed by Cannonball’s side during their initial fight against the Decepticons and served as an ad-hoc “mascot” of sorts. Tragically, when the Rising Sea was destroyed, Fireglide went down with the ship.