#bluethealpha

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Since I headcanon that he's an early 90s model of CRT, I based his body anatomy off old animatronic shells to protect his wiring and skeleton (thanks FNaF for exposing me to all this knowledge). His chest features a small access panel, to reach vital internal systems—such as memory storage, power cores, and old tubes/fuses.

His shoulders are left partially exposed, showing ball joints and mechanical rotors. It's so he has a broader, more fluid range of arm motion than a fully enclosed joint could. His arms and legs are plated in interlocking panels that mimic the appearance of muscle, with gaps around the inner elbow and knee joints for mobility and access. His hands have articulated knuckles and a slot at the ends for claws.

At the hips, he's got accordion-like plates to protect his wiring while allowing significant flexibility in his stride. His feet are flat and wide, with pronounced treads on the sole for stability.

His casing as a whole has many vents to avoid overheating, as a CRT he has no fans to cool his hardware on his own and relies on good ventilation in the studio.

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After the knight amputated him, his repairs were done with spare parts and scrap. The age of his hardware made it hard to fix him perfectly to how things were before, along with some amateur work since the fun gang helped (no fault of their own, though I like to think Kris had the most knowledge among the trio).

Since then, he's developed what I call Joint Stiffness Retention (JSR). I based it a bit on Adhesive Capsulitis (Frozen Shoulder), and Neuropathy.

After his arms were severed and reattached, Tenna’s internal wiring was rerouted through auxiliary joints and patched circuits. While functional, the precision in his movements suffered, particularly under stress. His limbs now require frequent rest—overexertion leads to stutters in fine motor control. While with some recovery, he's improved, the repairs have left him with permanent side effects due to the age of his systems limiting how he could be fixed. At least, until there's time to upgrade his hardware.

Limited grip strength - His servo tendons don’t fully contract anymore. Holding anything tight is like trying to close a stiff spring and may cause his joints to lock up. Mainly in his hands. He can hold the mic—but not for long. Overuse makes his fingers buzz faintly, and may be sore or a bit painful.