And the material was expensive enough that he couldn't get it with his own funding. But, if the world is ending, who cares if he steals some from storage? Nobody is using it anyway
So he created the rest of the exoskeleton, and put it on the frame. The frame was made with a combination of steel and carbon fiber, that with the 2d plastic exoskeleton makes it virtually indestructible
The next part was a simple cloning chamber that could easily be stored inside the robot and folded out when needed
However there were plenty of these in the genetic testing labs, and he had a friend there who was willing to spare one
Now for the hard part, the brain
This time he couldn't just put in the beefiest computer he could find. He needed something more powerful, able to run more complex commands to evaluate how likely it is for human life to survive on any planet it finds
But then it hit him, there was an experimental artificial brain in storage, nobody has touched it in years. The professor could simply test it, fix any bugs, and put it in the machine
However this was much easier said than done
He even had to get a neuro scientist to help him program it
But when it was done it was perfect, except for one thing...
It had no paint.
