Must be at least 6 feet tall. I’m normal height (5'6") and Tintin is usually a head shorter than Haddock is. I’d prefer someone with a medium build, but Haddock was a bit pudgy when he first joined the comic so I’m willing to negotiate.
Have to be able to grow a full beard or willing to wear a prosthetic one. If using your own beard, it has to be dark brown or black, OR you’d be willing to dye it.
Know the character, kthx.
Being able to yell “TEN THOUSAND THUNDERING TYPHOONS” in a very loud voice a plus.