Zanik is tasked to be the first cave goblin to visit Lumbridge as well as defend the Dorgeshuun city from a H.A.M. plot. She nearly loses her life while infiltrating the H.A.M. Hideout, but the player later revives her with the Tears of Guthix. After you finish the quest, she can be found in the underground goblin city, Dorgesh-Kaan.
"Zanik" is similar to Polish "Zanikł", which means "[he] had disappeared" or "[he] had vanished".
If you talk to the cook while you are taking Zanik on tour of Lumbridge he will say it's Duke's birthday, like on the start of Cook's assistant quest.
Zanik has her own theme song, but it is unlisted in Old School RuneScape. It was extended from around 1 minute long to almost 3 minutes long and made into a listed song in the main game on November 12, 2007.