CLAPtrap
You are a robot manufactured by the Hyperion Corporation. While most of your metallic brethren adhere to their program and offer assistance to the people of Pandora, you have a short circuit and have somehow gained full sentience and freedom.
While your kin toils and adheres to their programming, your destiny is your own and you are enjoying the hell out of it!
CLAPtrap Traits
Ability Score Increase. Your Constitution score increases by 2.
Age. With proper repair and maintenance a CLAPtrap can survive for 500 years. Hell, even without proper maintenance a CLAPtrap can survive for 500 years… They just go a little crazy and are really grumpy.
Alignment. CLAPtraps are all over the spectrum… It depends on how many short circuits they have.
Size. CLAPtraps are about 3 ½ feet tall, but weigh around 250 pounds. Your size is small.
Speed. Your base walking speed is 25 feet.
CLAPtrap Body. You are immune to poisons and diseases and only require 4 hours of rest a day to recharge. You suffer disadvantage to saving throws against lightning/electricity damage and take an additional 1d6+1 damage. Your armor class is 11 + your Dexterity modifier.
Lowlight Vision. Your optical lens allows you to have superior vision in dark and dim conditions. You can see in dim light within 60 feet as if you were in bright light, and in darkness as if you were in dim light. You cannot discern color in darkness, only shades of green in night vision.
Languages. You speak English and bad English. You also know a series of intricately rude hand gestures.
Subraces. The three main types of CLAPtraps produced are Meat Grinders, Medical Assistants, and Service Traps. Choose one of these models.
-Subraces-
Meat Grinder
You were constructed to serve as a guard or attackbot for some rich person or business on Pandora. Now you use your abilities for your own defense and personal gain.
Ability Score Increase. Increase your Strength score by 1.
Heavy Metal. You are covered in thicker armor plating. Your armor class is 13 + your Dexterity modifier.
Buzz Saw Betty. You have a large buzz saw in your central storage compartment. You can use your bonus action to attack with the buzz saw if the target is in melee range. Add your proficiency bonus to attack (no ability modifiers). The damage of the buzz saw is 1d6.
Medical Assistant
Your programming gives you the necessary tools to aid the quack doctors of Pandora with surgery, medical administration, and general clean up (it’s amazing how many extra body parts there are after a surgeon does his job ain’t it?). You have taken to the wastes in search of treasure and fame, and use your abilities to keep the weaker fleshy people at your side alive.
Ability Score Increase. Increase your Intelligence score by 1.
Hypo Spray. You have a small syringe that you can inject into a target to heal them of a poison, disease, or restore 1d4+1 HP. You cannot do this again until you have a long rest.
Programing. You are proficient in the Medicine skill.
Service Trap
You were programmed to fix computers and machinery that goes bunk on Pandora. Now with your freedom, you use your programming to hack into people’s bank accounts and help yourself to their credits, or soup-up vehicles so you can go off-roading and crush a few bandit heads under your monster truck tires.
Ability Score Increase. Increase your Intelligence score by 1.
Programing. You are proficient with the hacking tool and Repair skill.
The Proper Tools. You have a hacking tool installed in your system.
DIY RPG Productions 
Love this! For the Claptrap Body, however, to make it more accurate you might want to give them resistance to fire damage and vulnerability to acid damage