k55 rgb What are the Bindable Keys Called?

So I play Garry's Mod and I want to bind the G1-G5 keys but I have no idea what they are called, the console command to bind a key is

bind key command, and I have no idea what the actual keys are called, I've tried "G1" and that isn't a valid key it says.

“G-Keys” regardless of brand don’t have an ASCII value and are not directly defined. You need to do this through substitution. If you want G1 to be a specific game action, first bind the action to an otherwise useless or less convenient key (:;.,\ letter, etc.) in the game. Then in iCUE assign that letter or symbol key to G1-G6 in the actions menu. Hit + to create a new action. Change Macro to A-Z Remap. Select the appropriate symbol/letter and then click the G key to assign it. You can rename the action if desired.