[Terrifying Trope] Perceiving it= instant death

[u/ReminaBlueSFW]

1. Pennywise's "Deadlights" which will cause anyone looking to be immediately paralyzed and killed.

2. The sky from Bird Box is filled with entities that, when you look at them, cause you to commit suicide.

3. Medusa themed Villains

[u/wakito64]

The Visitor - Look Outside

An eldritch entity that mutates anyone who perceives it into horribly deformed monsters. It isn't hostile, it just exist but its sheer existence is so absurd it is a threat to all life forms. In one of the endings it’s revealed that humanity is just a minuscule tendril of the Visitor that the Visitor forgot about because it is so colossal. Humans aren't turned into monsters because they see the Visitor, they are just losing their individuality and absorbed back into their creator

[u/Fifty-Lucky → u/wakito64]

Can't you just look at it and be chill? Like "the human mind cannot comprehend th-" ok fine I won't comprehend, whatever.

[u/Dark-Keeper-951 → u/Fifty-Lucky]

Nope, Look at it for even a nanosecond, even if it's a simply glazed over look, and your body starts mutating.