What was the nickname of the original model for Half-Life's protagonist Gordon Freeman?
Explanation
The nickname of the original model for Half-Life's protagonist, Gordon Freeman, was "Ivan the Space Biker." This nickname is a result of a humorous naming convention the development team had for character models. Each model was assigned a quirky nickname, and Gordon Freeman's model, with his signature glasses and goatee, was playfully dubbed as Ivan the Space Biker, adding a unique touch to the character's development process.