A healer as seen in EarthBound.
Healers are beneficial characters in both Mother and EarthBound. The can heal certain status ailments, such as being turned to stone, mushroomized, diamondized, numbness or being possessed. While usually they charge money, they will pay $50 to take the mushroom from atop of a character's head. In Mother, they can also restore Ninten or Ana's PP. In EarthBound, they work for the magic healing shrine.
In Mother 3
Memo text implies they were originally intended to reappear in Mother 3, inside the Item Guy's cart. Unused sprites of a man's eyes peering from the tent may have been intended for this purpose; however, it was likely deemed unnecessary due to hot springs restoring status ailments.
"The man who lives in the Item Guy's tent with him. When your body feels strange, one miracle from him will leave you feeling refreshed."
- "Hello... and you are...? Say, have you ever suffered from some type of sickness or condition that you couldn't get cured at a hospital? If you're ever stuck with these types of embarrassing conditions, we of the magic healing shrine are here to ease your pain. We're ready and waiting... in the lobby of hospitals all over the world. The person next to me is the great teacher of magic healing." - NPC