- "What can the best mechanic in LS do for you?"
- — One of the mechanic's quotes when the player drives into LSC
The Mechanic is generally friendly, although may be short with the character if they drive in and out.
- "What's wrong with her now?"
- — Common entry greeting.
- "You got some beef with the Ballas or something?"
- — When the player installs armour.
- "Stops on a dime. Seriously."
- — Upon installing brakes.
- "That's a hell of a ride."
- — When the player drives in a super car.
- "These tires are hardcore!"
- — When the player installs bulletproof tires.
- "They use this stuff on armored cars you know!"
- — When the player adds bulletproof tires.
- "Did you need something or are you just being a dick?"
- — If the player drives into the garage but promptly exits without purchasing anything.
- The Mechanic treats downloadable-content cars such as the Turismo R, Zentorno and T20 as regular cars, and will say regular quotes such as "What brings you in today?", rather than the ones designated for vehicles implemented before any DLC ever came out, like the Adder, Entity XF or Cheetah.
- Hao - Street racer and mechanic who also works at LSIA Los Santos Customs in Grand Theft Auto V and Grand Theft Auto Online.
- Garage Mechanic - The player's personal mechanic that repairs and delivers their personal vehicles in GTA Online.
- J. Jones - Random NPC mechanic appearing in GTA V who also serves as the character model for the Garage Mechanic.
- G. James - Random NPC mechanic appearing in GTA V.
- J. Donner - Random NPC mechanic appearing in GTA V.
- Benny - Owner of Benny's Original Motor Works and vehicle customization mechanic in GTA Online.
- Zach - Motorcycle mechanic who appears inside the Clubhouse Bike Shop in GTA Online.
- Office Mechanic - Mechanic who appears in offices if a Custom Auto Shop is added in GTA Online.
- Warehouse Mechanic - Mechanic who appears inside the Vehicle Warehouse in GTA Online.
- Charlie - Aircraft mechanic who appears inside the Hangar Workshop in GTA Online.
- Weapon Mechanic - The weaponized vehicle mechanic and weapon modification technician in Bunkers, Facilities, Mobile Operations Centers and Avengers in GTA Online.