He killed a White Walker.
Game of Thrones Season 6, Episode 6
Yeah, I'm making a bunch of changes.
This morning I fired my dog WALKER.
The Big Bang Theory Season 10, Episode 16
Hanging around with Johnnie Walker...
Money Heist Season 3, Episode 2
How about that old lady
with the WALKER?
The Big Bang Theory Season 7, Episode 12
Why would obsidian kill a Walker?
Game of Thrones Season 5, Episode 5