Bulkhead and the fake Wheeljack talk about the battle at Darkmount Pass, near the smelting pits. Both are places from the 1980s Marvel "Transformers" comics.
Bulkhead and Wheeljack were members of the Autobot commando squad known as the Wreckers. This is the first time the elite group has been mentioned in a Transformers TV show.
The Autobot base has the codename Autobot Outpost Omega-1.
This show's incarnation of Wheeljack (clasically regarded as the Autobot scientist and inventor) shows him as a fierce, samurai-esque warrior (his second reinvention since Transformers: Armada (2002), where he was portrayed as an Autobot-turned-Decepticon).