To signify that these episodes are momentous -- and to pay tribute to Darth Maul and his intensity -- the opening logo is red in "Brothers" and "Revenge" rather than the traditional yellow.
The design of Morley's mouth as well as his animation is a throw-back to a time when creature effects were realized through hand puppets.
Ben Diskin's vocal performance of Morley is patterned after the distinctive speaking style of actor James Hong.
This is Darth Maul's first appearance in the Star Wars saga since Star Wars: Episode I - The Phantom Menace (1999), where he was supposedly killed by Obi-Wan after being cut in half.
The word 'brother' is spoken 15 times during this installment (not counting echos), 13 of which are spoken by Savage Opress.