The giant Loth-wolf, Dume, bares on his forehead the same symbol Kanan sported on his shoulder armor.
In an early version of the script for the episode, while repeatedly punching Rukh, Zeb would had been saying "I have had enough of you!" as a nod to the climatic fight in Star Trek III: The Search for Spock (1984) between Capt. Kirk and Cmdr. Kruge.
The original episode title for DUME was "Ascension: Part 2".
The Aurebesh text visible on Sabine's control pad translates to "System status: emergency shut down".