Gloomjoy 

A person who gains innocent (not malicious, that’s a sadist) enjoyment from watching another persons misfortune and suffering. Such people are often found watching sad moments from various cartoons and anime while secretly delighting in the misery of it all.

Person 1: Why are there so many “sad moments” compilations of various TV shows on YouTube?
Person 2: Just gloomjoys helping other gloomjoys I guess.

Gloomjoy by ThatBadassOnline August 26, 2018

Gloomboy

A person who is severly depressed, or mentally not well.
Generally seen as gloomy.

Also known as a character from a comic 'gloomboy'

Gosh, he's such a gloomboy.

Gloomboy by Ggdcnjjjjjm BB gj February 16, 2023