Sim, durante a Invasão Borg de 2381 , há invasões não-canônicas dos borgs atacando todo o Quadrante Alfa, incluindo os mundos-terra do Império Klingon, o Império Estelar Romulano e outros planetas. Isso ocorreu no romance: Star Trek-Destiny Book III: Lost Souls
The Borg Invasion of 2381 was the historic attempt by the Borg Collective to completely exterminate the United Federation of Planets, Klingon Empire, and other allied worlds in the Alpha and Beta Quadrants and to subjugate the remaining worlds in local space. It ended with the Collective being dismantled and subsequently absorbed into the Caeliar gestalt.
The invasion left dozens of worlds in the area of the Azure Nebula in utter ruin, decimating much of known space. As a result of the invasion, upwards of 40% of the Federation Starfleet was destroyed, and over 63 billion citizens of the United Federation of Planets, Klingon Empire, Romulan Star Empire, Imperial Romulan State, and non-aligned worlds were killed.