Sine Spenning, recognized for his flamboyant attire and striking teeth, served as a prominent news anchor for GoNet, a news outlet with galactic reach. GoNet's leadership initially considered Spenning to spearhead the official coverage of the Valo Republic Fair when Supreme Chancellor Lina Soh assigned the task to them. Nevertheless, Chancellor Soh preferred Rhil Dairo, another GoNet reporter, to be the primary correspondent, thus overruling the initial plan.
The novel The High Republic: The Rising Storm, penned by Cavan Scott and released in 2021, featured Sine Spenning as a character.