Squirrel was born in 2264. He is 13 and has a knack with computers and electronics. As such, he is an important member of the scavenging team, because he's the only person who can tell how valuable a piece of scientific hardware is. He's been caught recently, but he's working on an escape plan. He's also sickly, often visiting Lucy for some sort of medication. Inside Lamplight, he spends a lot of his time reading, playing with electronics, and trying not to do anything too stressful.
He says his nickname came from his inquisitive nature, but other Lamplighters say it's because he's "nuts".