H3llloWorld 

A Nigerian rapper, singer, songwriter and producer. His name is an abbreviation for "healing everything. Love, life and levitating over the world" to serve as a reminder to constantly repair what is broken.

After H3llloWorld is peace.

H3llloWorld by H3llloWorld April 27, 2021

Helloworlder 

1- A beginner-programmer.
2- Guy, who just started to learn some programming language for first time, but already considering himself a programmer.
Etymology: first thing you learn to do in programming is to make command shell print "Hello, World!", it is a classical standard for all the manuals.

Young and naive helloworlder came here to take his chance to become an alpha-nerd's padawan.

Helloworlder by Mef-Mef January 10, 2011

holloworld 

Reality as viewed through virtual reality.

Semms like a holloworld from up yonder in cyberspace.

holloworld by Hercolena Oliver December 30, 2008

helloworld0888

the person who made their brand two words and some numbers

“Did you see helloworld0888’s new post?”
“I did, surprising since it’s been 3 months since the last time they posted”.

helloworld0888 by MaximumFrogTime April 15, 2021