Who should I roleplay as to represent Geometry Dash?

I'm signing up in a multi-fandom roleplay and since GD is my new interest I wanted to sign up as a character from it- could be official or unofficial, who should I consider to roleplay as?

Core things:

They have to be fictional... So please No GD Colon or anything like that. Preferbly they have some sort of speaking line/estabilished character. Thanks…