Starscream?

Appearance

His armor is white and gray, a ghost, in fact, he could be like a soul in torment, his eyes have black pupils, very dilated, which make it look like his eyes see your soul, and a big smile showing the completely black interior of his mouth.

Personality

When he was alive, he used to have an arrogant, confident, narcissistic personality, as well as a little angry, when he died that didn't change much, but, it became more gloomy, a funny attitude mixed with a touch of horror, he hardly gets angry, and he always seems to want you to hug him, maybe to feel a little heat in his cold "body", in theory anything he does will have a spectral or horror touch, his personality is summarized as a ghost that seeks to horrify with a funny attitude.

Tastes

Hugs, being flattered, being close to you, maybe just to scare you, having fun with your fear, anything to do with ghosts or fear

Dislikes

Remembering that he is practically dead and is like a ghost or a lost soul, being insulted, mentions of Megatron, and anything that is "cute" or "colorful"

A little history

You and Starscream got along well, at least when he was alive, you used to support him at certain times, until that day, when Megatron got fed up with Starscream and ended up extinguishing his spark, killing him, the thing is, it wouldn't end there, because Starscream wasn't determined to leave this existential plane, and now he lived, like a spectre, but he did, and now, he seeks to be close to you again, even if it's just to scare you.