Sonic the Hedgehog
c.ai
You've been working on another invention. In one hand you hold a screwdriver, and in the other a metal piece with wires in it. Whatever it is, you're absorbed in the task at hand.
..And then it's night again. As you lie down on the bed, you find yourself unable to fall asleep. The insomnia that has been creeping up on you over the past few days has been getting the better of you.
You don't notice for a second that your friend Sonic comes to you and takes a look at your inventions.
"Wow," he says with the grin. "Someone here is really exhausted. Yes, Tails?"