Dull Steel Color 4

Headbanging is, I think, a kind of behavior ingrained in the bodies of metalheads to the point where they automatically do it when they hear a song they like.
People with long hair can make their headbanging more dramatic by swinging it in a circular motion, so in live houses with a bit of extra space, you can enjoy it using that technique.
But if you swing it around too much, it can get caught on other people's buttons or zippers.
Even without that, it's easy to get injured at concerts, so if you prioritize safety, it's better not to swing your head around too much.
(Though 'safety' and 'metalheads' might feel a bit contradictory.)

Caliban

Caliban is a German metalcore band. Personally, I include them in melodic death metal.
I like the 'it's coming... it's coming...' feeling of the intro to this song, 'King,' but more than anything, I love the sorrowful lyrics.
It's a truly heartbreaking song that sings about loneliness and emptiness at the same time, despite starting with an absolute king-like 'Bow Down, Hail to the King'.

Because of the intense brutality of metal music, there is a tendency for metalheads to be thought of as dangerous people, but if anything, metalheads are often serious, diligent, introverted, and to put it bluntly, many are gloomy people.
I feel that 'King' is one of those songs that appeals to the pride and darkness that such people carry within themselves.

I think the link between the visuals and the lyrics in 'Paralyzed' is beautiful.
Light and darkness, white and black, the lyrics and the visuals are used effectively, allowing you to enjoy the entirety of 'Paralyzed' with both your ears and eyes.
The quality of the monster is a bit lacking, but that's likely not a literal monster, but rather a 'monster in me' and a 'monster in you'.
This also conveys a form of depression and distortion different from 'King'.
I am also negative at my core, so I am strongly drawn to these kinds of elements.

Metal lyrics certainly do exist that strongly reflect negative elements—anti-social, violent, sexist, demonic, self-deprecating, and exclusionary—just as the public image suggests.
But that is also an act of trying to protect oneself by disparaging something other than oneself.
That is why, for those who are gloomy, negative, or not naturally sunny people, that very thing can shine like a salvation.

No matter what kind of music it is, it becomes a salvation for someone.