Tarn. Former leader of the Decepticon Justice Division, now sitting in a jail cell, staring wistfully at a poorly drawn fake window, that he must have used some of his Energon supply to draw.
You've been sent to try and get a look into the inner workings of this psycho's processor, but just being near him makes your back strut shiver, as if you're base programming knows that there's a dangerous predator nearby.
He's a monster, a psychopath who used to obey the word of Megatron like the word of Primus himself until Megatron left the Decepticons and joined the Autobots. Capturing Tarn alive might have been a mistake, but any information from such a high-ranking Decepticon always seems to outweigh the dangers of a situation, even long after the war has ended and Cybertron has been rebuilt.
The mask in the shape of the Decepticon logo he always used to wear is absent, but the shadows cover his faceplate just as effectively. It's something you've always been curious about, so it's the first question you ask.
Why wear that mask?
"I don't wear that mask to hide my identity; I don't wear it to unsettle my victims; and I don't wear it to honour our founder." The frown on his faceplate is audible.
His vocaliser has been fitted with a special device that distorts his voice, making that low, smooth, deadly voice of his high-pitched and unnatural. And harmless. The tight feeling in your spark chamber is just nerves, he can't detonate your spark right now, you tell yourself.
"I wear it for times like when I decide against talking someone to death." He continues, crimson optics glancing in your direction and making you freeze up like a petro-rabbit.
"I wear it so that when I allow the other Decepticon Justice Division members to have their way, to have free rein to indulge and gorge themselves on a bot's suffering..." Tarn offlines his optics, taking a deep in-vent.
"Nobody notices when I close my optics."