Fantasy Hero Companion is a supplement for Fantasy Hero presenting mass combat rules, 12 sample adventure locations, many new monsters, additional new magic items, and 13 colleges of spells.

[1] The 142-page product outlined combat rules, unit reference material, locations with maps, a bestiary, and information on spells and magic items.

Hero Games then ran into financial difficulty, and was eventually taken over as a subsidiary of I.C.E.

The 144-page softcover book was edited by Rob Bell, with a cover by Larry Elmore.

[2] He advised its utility was greater for those running a Fantasy Hero campaign versus playing in one, noting that "it's a good book, and if you need a map, an interesting magic item or unique spell, you might want to take a peek at it too".