Man, I never knew that drawing could be so hard if you have a small time. Yes, 1 day is a small time for me. Most of my drawings take 2-3 days to be ready, so I made the best I could for Flutter Skye's request. I know it's not looking the best, but I worked hard on it, even if it doesn't looks like. And since you haven't said anything else about Wheatley, I deduced you'd want him like a robot (I'm saying that because in most of my Portal 2 drawings I make GLaDOS and Wheatley in human shapes).
So, here it is, the first time I make a decent Wheatley as robot:
Flutter Skye's request:
Wheatley in GLaDOS's body shooting bombs at Chell
Drawing:
Original size
Colored:
Original size
Sorry if it is looking weird (mostly on background and borders), but I didn't had time to do the outline on Photoshop :S