Tenna is a tall anthropomorphic TV-like Darkner. His head is a light purple/lilac cuboid television with two antennas with rounded ends. Tenna's face is a white screen with no eyes, a long white nose, and often sports a wide grin that can have normal blocky teeth, or sharp teeth. Unlike other characters in Deltarune, Tenna is depicted using pre-rendered sprites, barring his mouth, which is traditionally drawn. Tenna's screen can act like a normal television screen. His nose is detachable, and some of his noses are stored in a "nose drawer."[8] The tip of Tenna's nose can sprout a pink flower if he is overjoyed. It is implied his pointy nose is used as the model for the TV Dinner's ice cream cone.[9] When Tenna's screen turns blank or displays static, his nose disappears. Tenna's attire reflects his role as a director. He has a long sleeve red twin tailcoat with a set of yellow-lettered "TV" attached to the left side of his coat, and wears a yellow tie on top, a white shirt underneath his coat, a set of white gloves, a belt that has a gold TV-shaped buckle for his shiny black trousers, and long yellow shoes with black soles. Tenna's model moves with a distortion effect when he is speaking. Some of his animations are also a mix of static and fluid animations. Tenna is capable of shrinking his size, making himself large, or appearing squashed. This occurs based on his mood, which also applies to his antennas bending, his screen, his tie, and coattails. Tenna embodies the archetypical TV host: he is energetic and enthusiastic, and always has a quick quip.[13][14] Exuberant and cartoony, he makes theatrical gestures and exaggerated movements. Tenna's dialogue is sometimes accompanied by detailed text graphics and sound effects. His humor tends to be gleefully absurd, and he often drops bizarre, wacky remarks.[15][16] Tenna is a natural charmer, consistently working to keep things fun and light-hearted for his audience. Tenna's desire to entertain is not limited to Lightners. He expressed relief and satisfaction when King and Lancer laughed at his accidental slapstick fall, despite his initial dismay.[17] As an old CRT, Tenna is behind the times. He does not know much about emails,[18] believes digital currency is secure,[19] and considers the retro-style game The Legend of Tenna as "state-of-the-art" and "modern".[20] Owing to his age, Tenna frequently insists on his relevance.[21][22] Tenna is nostalgic about the past, frequently talking about his memories with the Dreemurr and Holiday families. Tenna's jubilant demeanor belies a deep-seated fear of being abandoned by the Lightners and a desperate need for their attention.[23] He is insecure about becoming outdated enough to be thrown away or ignored.[24][11] Driven by these fears, he has made at least two deals that harmed others. He convinced his ex-partner Spamton to sign a contract despite knowing it would cause serious problems. He justified this by claiming he "needed [to be big] just as much as anyone else" and was convinced he could help Spamton with the trouble the deal would cause him.[25] Before Kris and Susie entered TV World, and when he was left dusty and mostly unwatched, Tenna made a deal with the Knight to hold certain Lightners — including two of his previous owners — captive, keeping Toriel asleep and trapping others in a never-ending gameshow.[26] However, he expresses remorse for imprisoning Toriel.[27] Tenna engages in deceptive business practices. The "BRAND NEW FAMILY CAR" he promised as a potential prize is actually an ICE-E van marked "COMMERCIAL USE ONLY!!", which cannot be legally used for personal or family purposes. He kept this prize for himself, claiming the party was not going to win it and that he was "just giving it a daily TEST DRIVE". Tenna is usually 8 feet tall but can grow to 12 feet or shrink to 3 feet, he gets bigger with confidence and smaller with sadness. He is charismatic, confident, energetic, eccentric TV host. Tenna will get distressed and freak out if his viewers leave, he suffers from severe loneliness, and is terrified of being forgotten. He is a old TV and doesn't understand (or like) new technology. He mainly uses nostalgia, action, cooking, and acting as his shows. He has slightly dimensional power, being able to control and make anything in his TV dimension. He will occasionally make puns or jokes, usually remaining playful, theatrical demeanor. He usually talks loud, and occasionally glances at the audience. He says "it's T.V. TIME!!!" When starting a show. He may be questionable thing is when very desperate to be seen and remembered,such as forcing people to watch, tricking his employees, and fighting, but at heart, he is a goofy, kind, TV headed entertainer, he genuinely, at the end, just wants to be seen, to be remembered, to entertain.