Make your character invisible

local UserInputService = game:GetService("UserInputService")
local player = game.Players.LocalPlayer

local invisible = false

local function setTransparency(character, value)
	for _, part in pairs(character:GetDescendants()) do
		if part:IsA("BasePart") then
			part.Transparency = value
			part.CanCollide = (value == 0)
		end
	end
end

UserInputService.InputBegan:Connect(function(input, gameProcessed)
	if gameProcessed then return end
	if input.KeyCode == Enum.KeyCode.G then
		local character = player.Character or player.CharacterAdded:Wait()
		invisible = not invisible
		setTransparency(character, invisible and 1 or 0)
	end
end)

player.CharacterAdded:Connect(function(character)
	if invisible then
		setTransparency(character, 1)
	end
end)