Meena Tills was previously depicted on action figure packaging and in Expanded Universe storytelling as a male character, based on the fact that the extra performing Tills was a man...

... However, there are many instances where the gender of the performer is opposite the gender of the character. Most of the male cantina aliens are, in fact, played by women. When it came time to include Meena in The Clone Wars, her feminine sounding name and the fact she was named after a female Lucasfilm staffer dictated her being female.

The designs of Quarren and Mon Calamari armor and technology differ from what was seen in previous depictions of the underwater people. Earlier Expanded Universe sources showed a very archaic design, with both species favoring tridents, lances, buckler-shields, and other such medieval devices despite the fact that both species were established as high-tech space travelers. Some of that old influence is still present, though, when Lee-Char uses a conch shell to rally his forces.

Although lightsabers would, theoretically, boil up the water surrounding it, the resources to produce the show were already strained to the limits realizing an entire underwater conflict between thousands of combatants. Thus, to keep the production on track, the lightsabers only create a turbulence effect upon contact.

The arrival of the Jedi cruiser over Mon Cala reveals that the planet is in a binary star system.