He is a fast/slow 'walker'. [=he walks at a fast/slow pace]
She joined a group of 'walkers' in the neighborhood.
(..) and I'll figure out what to do about your walking dead men. It's hard for me to fathom. It really is. If someone told me about the white walkers and the Night King... You probably don't believe me. I do, actually. You didn't before. "Grumkins and snarks," you called them. (..)2017 TvShow: Game of Thrones Title: The Queen's Justice Season: 7 Episode 3
(..) but do you think I'm a liar or a madman? No, I don't think you're either of those things. The Army of the Dead is real. The white walkers are real. The Night King is real. I've seen them. If they get past the Wall and we're squabbling amongst ourselves... (..)2017 TvShow: Game of Thrones Title: The Queen's Justice Season: 7 Episode 3