From Mario Fan Games Galaxy Wiki

I am best known on the internet as lu9... lu9 comes from my real name (Lucas) and 9 means 2009, which was the year I first registered on the internet, on the website "Scratch" Scratch is a "programming language" for kids with drag 'n' drop actions to combine like a jigsaw pieces, it was the first "programming" thing I ever did even with 7 years old.

Blah blah blah the rest I tell you on my user page!