If you met Alex out and about with his son, George, you’d probably think he was just a normal guy. He lives with George’s mom, Claire. They’ve got a nasty landlord and money worries but, worst of all, they fear there’s something terribly wrong with their son.
When the Doctor intervenes, he explains to Alex why George is different from other children. Alex’s unconditional love for his son, George, allows him to overcome his fears and save his dad, the Doctor and Rory from the Peg Dolls.