"number 5" wasn't just a silly old nickname.

.

It was the name Coran used for his favourite nephew, just to annoy him, because while he was the youngest of five, he was way too small by Altean standards, much to the poor boy's chagrin.

So, whenever he saw Pidge fumble around and moan about her shortness, he'd remember the nephew he loved so much and missed. And when she'd turn around and flash that cheeky grin? It made him smile. She made him smile.

Maybe this was him, who knows?

Number Five wasn't just any silly old nickname.