The
Ral Partha 10-515 Ravenloft: Castle Forlorn
is a vintage metal miniature boxed set released in July 1993 as part of the official Advanced Dungeons & Dragons (AD&D) 2nd Edition line. Designed by sculptor Dennis Mize, it features key NPCs and creatures from the Castles Forlorn campaign accessory. 
Set Contents
The set is known for containing 12 miniatures cast in white metal at a 25mm scale. Notably, it includes a "tongue-in-cheek" invisible miniature called "The Ghost," which is simply an empty base with footprints. 

    Mark ApBlanc: A central figure from the ApBlanc family.
    Tristen ApBlanc: A key NPC, often depicted in his ghost or "at night" form.
    Morholt ApBlanc: A sword-wielding ghost with an incorporeal lower half.
    The Wild Huntsman: A legendary spectral figure from the Forlorn setting.
    Huntsman Hounds (3): Three distinct spectral hound miniatures that accompany the Wild Huntsman.
    Maeve the Druid & Shelaugh the Druid: Two female druid characters.
    Rual: A character often invisible, sometimes paired with the ghost base.
    Herrd of Clan ApKie: A member of the local clans in Forlorn.