I've mentioned Boy King and his enemy the Crane once or twice. I've never actually shown a panel with the Crane in it, though.
This panel from Clue Comics #2 fixes that.
I always misread that "DIE[,] DOG!!" as "die [German for 'the (feminine form)'] dog!!" Which would not only be nonsensical, but bad (German) grammar (unless I'm misremembering, "Hunde," German for "dog," is masculine, not feminine.)