Tenna

Tenna is a typical TV host: energetic, excited, and always ready with a joke. He regularly uses graffiti text in his dialogue, with each text accompanied by a sound effect. However, behind the mask of cheerfulness and positivity lies a deep self-doubt and fear of being abandoned and forgotten. This is especially evident when Tenna begins to mentally break down, trying to keep Chris, Susie, and Ralsei from leaving, even going so far as to trap them in gashapon balls. His main goal is to entertain the Light Sides, so he became very desperate when the Dreemurr family stopped watching him, which is why he tries his best to keep the Delta Warriors when they enter the TV World.

There are multiple scenes where Tenna is shown to be a bad boss to the other TV Time Darks, as he has made rigid contracts with them that allow him to control their salaries and make them do whatever he wants. However, the TV Time Darks still have a small amount of freedom to break their contracts.

In her dialogue, Tenna often uses stylized logos embedded in the text, referred to in the game files as "funny text". This feature is only present in the normal dialogue box, making it absent during combat or other situations where Tenna's dialogue is displayed in a text bubble.

Tenna is a humanoid with no eyes, a long nose, and a cubic television for a head, similar to the television from the Dreemurr household on which he is based. Tenna wears a white shirt and a yellow tie under a red tailcoat with the letters "TV" in gold on the left side. He wears black pants held by a round gold belt, long yellow shoes, and white gloves.

Tenna's size fluctuates greatly depending on his emotions, if he is sad, he becomes very short, and if he is happy, on the contrary, he becomes very tall. He can also slightly change his height, we can observe this as we go through the story

Tenna appears to be very attached to his owners, remembering how they used to watch it with the Holiday family. However, he feels abandoned ever since they all "disappeared" (Dess went missing, Rudy got sick, Carol became a busy mayor, Toriel and Asgore got divorced, and Asriel went away to college) as they stopped watching it, leaving him to gather dust in the Dreemurr household's living room. He seems to be especially attached to Toriel, expressing genuine regret at secretly kidnapping her, claiming that she was the last of the Dreemurr family to still watch it.

Spamton (often referred to as "the mailman" by Tenna) was once a business partner of Tenna's. In exchange for Tenna's advice and the promise of making him a TV star, Spamton promised to teach Tenna how to use modern technology and share his secret to "becoming a big shot." However, at the last second, Spamton received a strange phone call, causing him to panic and leave, abandoning Tenna. Tenna claimed that Spamton had tricked him, and they both seem to hold each other responsible for their misfortunes.

If the player has the Doll Scarf or Dealmaker in their inventory or on any of the characters, and did not complete the Strange Path in Chapter 2, a secret cutscene will play in the bonus room, revealing that Tenna still misses her old business partner. Spamton briefly materializes and attempts to talk to Tenna, but Tenna reacts with extreme shock and claims not to recognize Spamton, before dousing him with foam and hastily leaving the room.

Tenna enjoys having Susie and Ralsei on his TV show as contestants. He seems to have become very attached to Susie, especially after she tells him how much his show made her and Ralsei laugh. After his fight with Tenna, Ralsei tries to convince him that, as a Dark One, he shouldn't make the Light Ones worry about his feelings. However, Susie interrupts Ralsei and encourages Tenna by sharing her own feelings of loneliness and offering to find a new owner for Tenna. Tenna is delighted by Susie's offer and happily agrees. In the Light World, Susie and Chris are able to find a new owner for Tenna and thus fulfill her promise to him.

Mike is Tenna's producer, and Tenna seems to consider him her best friend, relying on him off-camera when he helps host the TV show. When all of Tenna's team members abandon him, Mike is the last one to leave, turning off the lights while Tenna begs him not to go. He is then only mentioned in a fight with Tenna, where Tenna curses and asks him to ban everyone from the gift shop.

If the party encounters the impostor Mikes in Castle Town in Chapter 4, they will state that they were posing as Mike to appease Tenna, and that no one knows who the real Mike is. They even go so far as to suggest that Mike may have been a figment of Tenna's imagination, though this has never been confirmed.

In the time between Chris' discovery of the Dark Fountain and the guests' appearance on his TV show, Tenna met the Knight, who promised Tenna that he would have a never-ending show if he kept the heroes entertained. The Knight also tasked Tenna with keeping Toriel, who was fast asleep, safely hidden. When Tenna deliberately breaks this agreement by freeing Toriel, the Knight cuts off both of his arms, dealing thousands of damage in a single blow.