Happy The Halloween Guy

Happy The Halloween Guy is a limited-time exclusive NPC, which means he is not a permanent fixture and is not a combat encounter at all. There is no HP, no damage value and no spawn-location data attached to him, so you never fight, kite or avoid him the way you would a hostile creature. His walkspeed is even listed as N/A, underlining that he is a stationary, passive vendor-style entity rather than a roaming mob.

The catch that defines him is impermanence: he and his associated items disappear from all inventories once the Halloween event ends. That makes any purchase or reward tied to him a fleeting, seasonal novelty rather than a lasting power gain, so do not build your long-term strategy around anything he provides.

The practical approach is to treat him as a flavour event. Visit him while the seasonal window is open, grab whatever cosmetic or themed extras you want for the experience, but spend your serious survival resources on permanent gear instead. Knowing his items will vanish afterward keeps you from over-investing in content that simply will not be there once the holiday period closes.