The Stalker is a naturalist, far more interested in observing the habits and habitats of his fellow denizens of Cybertron than becoming involved in their war. Equipped with a jet pack and active camouflage system, he is surely far too well-equipped to run into any trouble.
The Stalker was journeying through the ruins of Crystal City, taking notes about the insectoid protoforms found there, as well as their interactions with alloygators and scraplets. His observations were disrupted by the arrival of the Decepticons Shockwave, Soundwave and Starscream, and he eagerly changed his focus to these new specimens. He watched as the Decepticons conquered the Insecticons' leaders, and then switched his attention once more, this time to the Autobots Ironhide and Sideswipe as they made their escape with the Dark Spark. He watched the Autobots' battle in the train station, but ultimately his recorder was noticed by Bumblebee and his recordings abruptly ceased.
- Like the Veteran (and unlike the Entrepreneur), the Stalker does not make a physical appearance. Instead, his side story is revealed through collectible audio logs. The Stalker's logs are found throughout chapters 2 and 3.
- The Stalker's voice seems to be inspired by David Attenborough.
- The Stalker comments that his camouflage system was worth every last Shanix he paid for it.
- It's not totally clear what happened to the Stalker; his last message records that "the smallest" of the Autobot group is headed his way and has noticed his recorder, then ends abruptly, but in-game text indicates that Perceptor was unable to decode this final log due to "significant corrosive damage", implying the involvement of an Insecticon.