He's actually been hiding around the house since Christmas, but he's a bit socially awkward and didn't want to join in and play with Mini Team Free Will.
I eventually convinced him that you'd all love to meet him and that it would be fun, whereupon he disappeared into a corner for a few weeks working on an equation to prove whether 'fun' was a theoretical possibility.
I'm not sure if Mini Team Free Will are impressed by his conclusions ...
( Say hello to ... )