[Just a Y... that's big, honestly.]

It doesn't have to be your name. Most people put something else, just in case.

[Unlike, say, himself, but he's had weeks to mull over his silly decision to put his real name as the display, so,] I'd have changed mine, but everyone already knew it, and it would've been a hassle to tell each person it changed...

Anyway, you're new, so you might as well make it whatever you want. [a glance. a beat. go for broke,] How about "PurpleGuy"?