A person who plays roblox. Does not include noobs as they are refered to as a plain "noob". They usually like {roblox}.

When someone goes to the gym and spends 90% of the time on their phones scrolling through social media

someone from robloxia

Your roblox character on the platform known as “Roblox” usually referee to roblox veterans.

Someone who is a true roblox player AKA PRO that

The "players" in ROBLOX
or
used to describe an annoying child when talking to people.

A Roblox player at Roblox.com. These are faggots that spam the chat, false reports you, and makes the idiotic Roblox threads. You can find these assholes on a Roblox" Role Play" game, or clogging up the Roblox forums. They try to be cool by spamming acronyms, and usually end up looking like a dumbass.