Tenna

Tenna, formally known as Mr. "Ant" Tenna, serves as the primary antagonist and final boss of the much-anticipated Deltarune Chapter 3, which takes place within a new Dark World created inside the Dreemurr household's television. Tenna is a 3D-rendered humanoid Darkner with an antique television set for a head, embodying his origin as the physical manifestation of the family's old TV and its antenna. He is portrayed as a charismatic yet manipulative showman and director of his in-universe program, "TV Time," driven by a deep fear of obsolescence and a relentless need to capture an audience's attention. His striking visual design features a tall, slender silhouette dressed in a flashy red suit with coattails, a long yellow tie, black pants, white gloves, and distinctive yellow dress shoes. Within the lore, Tenna is a former, now bitter, business rival of Spamton G. Spamton, who frequently mentions their contentious history during hidden dialogue segments. Tenna forces the protagonists, Kris, Susie, and Ralsei, to participate in a deadly game show called "Mr. Tenna's Marvelous Mystery Board TV Time," controlling the narrative of the Dark World around the theme of vintage television broadcasting.