The undershirt that Gregor wears is adorned with the logo of the Power Sliders diner he worked at on Abafar during the Clone Wars.
Rex, Wolffe and Gregor all have faint scars on the sides of their heads where they had their control chips surgically removed, like Fives did during the Clone Wars.
Agent Kallus has undergone some unspecified promotion, as his Season Two animation model sports a slightly different rank badge and collar.
Indicative of the different design aesthetic of the show, the tactical droid head is the same model type frequently encountered during Star Wars: The Clone Wars, but appears much more streamlined and smooth in this series.
The joopa fishing harness is built out of a Clone Wars-era backpack, famously used by Ahsoka to carry Rotta the Hutt.
The joopa fishing sequence is an extended homage to the 1975 movie Jaws.
