I have surfed the net before beginning my work, and I noticed that there is basically a wrong concept between a lot of people: the doll is made from found objects and spare parts, so, it haven't to be identical to the one of the game, to reverse, the more arranged it will look, the better it will be.
Starting from this concept, feel free to use all you will find, and take this Instructable only as a guideline for your own original project.
Step 1: Gathering the Materials
1-A baseball ball (head);
2-Three different fabrics (body, legs and feet);
3-A part from a door handle, that resembles a porthole, and his nails (head);
4-Three round headed screws (head);
6-Electric wire (head);
7-Hemp rope (arms);
8-Little ceramic things, that, honestly, I don't know what are supposed to be (hands);
9-Thinner rope (hands);
10-Large screw (right hand);
11-A tubular plastic thing, it is some sort of case I think (tank);
12-A crown cap (tank);
13-A large nail (tank);
14-Some rubber bands (tank);
15-A big paper clip (tank);
I found nearly all this material in my attic, so, I don't know what are the strangest pieces, because it has being filled in many years with spare parts and strange things.
Step 2: Gathering the Tools
I used these basic tools:
5-Epoxy glue (optional).
Step 3: Beginning the Head
Then screw in the three round headed screws. If you aren't able to screw in the screws, you can make holes with the drill, and then screw in.
Now bend the wire in the right shape to represent a protective grid, and, after you made the holes in the right points, you can fix them at the baseball ball by simply hammering the wire pieces in the holes.
If the wire doesn't fit steady, you can add a drop of epoxy glue in the holes.
Step 4: The Oxygen Tank
Now you can close the tube again.
Tie some rubber bands to the upper part of the tank, and finally attach the electric wire to the nail under the crown cap with a knot.
Step 5: The Body and the Legs
Make two rectangular pieces for the legs, and two smaller ones for the feet. Sew the feet to the legs, close the side of the leg-foot piece leaving only the part that will be attached to the body open, then turn inside out. You have to fill the legs with something, for example cotton.
Sew the body along the sides and the bottom, leave open the top and the slots for the legs. Sew the legs in their slots, and be careful of sew them on the right side. Now turn inside out also the body.
Finally fill the body. I filled it with cotton, as the legs.
Step 6: The Arms
Now tie the ends of the rope to the hands: in this case the ceramic bits. You can use the thinner rope to tie the larger rope to the hands.
Step 7: Fixing the Arms to the Head
Step 8: The Drill
If it doesn't fit steady you can glue it with epoxy glue, and then tie it.
Step 9: Fixing the Head to the Body
If you want it to be attached more steady, you can nail it to the head.
Step 10: Attaching the Oxygen Tank to the Finished Doll
Finally put the paper clip in the front of the body among the rubber bands.
Now the Big Daddy doll is finished!
Admire your hard work and be careful not to wound yourself with the drill! :D