Hunting for adventure? Electrify your pin collection with Loungefly Funko Pop! Pin Killua. Pop! Pin Killua activates his Nen, sending blue lightning around him. There's a 1 in 12 chance you may find the glow-in-the-dark chase. Join the hunt and expand your Hunter X Hunter set. Enamel pin features silver-colored hardware and built-in stand. Pin is approximately 4-inches tall.