Cursed text
The gaming/meme-culture name for glitch or zalgo text, most often used for Discord, Roblox and Minecraft usernames and chat.
Cursed text is the name this effect (Unicode combining marks stacked on normal characters) goes by mostly in gaming and Discord communities — usually applied to usernames, nicknames, and chat rather than long-form captions.
It's mechanically identical to glitch and zalgo text; the name reflects where and how it's typically used rather than a different technique.
Generate it with the cursed text generator, tuned with a lighter default intensity suited to the short, byte-limited fields usernames usually are.