This figure almost has a dignified look to him with his Head dress and outfit.
Sitting Bull is the easiest to find in the series..
The Gray Morrow artwork portrays a much older character than the figure.
Mego Sitting Bull Checklist
Head dress,
Shirt, Pants, Moccasins
Bone Necklace, Spear
Mego Western Heroes are one of the three series that appeared on Kresge cards, they are the most affordable.
In 1980, Mego started selling old lines (Monsters, Micronauts) under the Lionrock banner, it is assumed this was an attempt to raise capital. (Courtesy of Ron Stabilio)
In Germany, the American West were issued in 3 different two packs.
These are very rarely seen, here is side one.
And this is side two, the characters fit rather snugly inside.