Is the term elemental bender copyrighted?

Answer 1

Generally, two-word phrases would be considered too short to qualify for copright protection. When they are used in trade, such as business names or slogans, they can be protected as trademarks. Trademarks can be formally registered, but this is not required for protection: thus, when you use the phrase "elemental bender" in a commercial context, it could be considered a common-law trademark relating to Avatar, and unlicensed use could be considered fraudulent.