I don’t know how old he is and I’ve never seen him in anything, but based on his photos alone, I would accept it. He almost looks too young for Linda - lol, yes this is important to me okay - but he has a mischievous look about him that I like for Wally.
Seriously, though, I’m ready for them to cast anyone. So long as he’s legal, lol, and a great actor. And so long as Wally is here for Iris (and Linda because again I am that person) first and foremost, and isn’t just another member of Barry’s posse.