Terk loves the spotlight, and she is perfect "big sister" material because she's Tarzan's closest friend—protective, concerned, and absolutely convinced that Tarzan can't survive without her. Terk loves telling Tarzan what to do—that is, until Tarzan's physical strength proves he can hold her in a headlock instead. Even though Terk is a bit bossy at times, Tarzan knows it's because Terk cares, though she will never say so willingly. She is also the best friend of Tantor, whose neurotic persona often frustrates the ape to no end, though she truly values him as a friend and often takes advantage of him.