When I was trying to make my first signature, I wanted to make one in the ROBLOX logo style. This was scrapped due to my PFP being the GameCube logo.
2019 (failed signature), 2020–present
Short version (TRG9009)
Symbol (just the GameCube logo)
In July of 2019, TheRobloxGuy9009 attempted to make his signature, but instead messed up his signature format, resulting in a red link. As of 2020, his signature currently works now and you might see his logos in the future.