Wherever the heck he wants to be. Honestly, you should just leave him alone. He is a regular human being just like the rest of us. Sure it was a joke at first but after decades of the same question being asked and picture books being published, he is probably sick and tired of it.
In fact I think I will create a charity called The Waldo Protection Association. Please, donate so we can burn these demon books and execute the monsters desecrating Waldo's good name. We need all the help we can get.
He is everywhere, watching you... waiting for the right moment when you're distracted... always ready to attack! he's watching you!
oh, hey, wait, are we talking about the same Waldo?
I will be with my family, celebrating the new year, but actually, I won't know if I'll be happy because 2015 will be over (2015 so far is being the most annoying year of my life) or if I'll be sad because it seems 2016 is going to be even more annoying than 2015 :/