From the update:
These figures are only available as a set and not sold individually. Figures sculpted by Bobby Jackson and originally produced by Grenadier as the K-FORCE line and then Demon Blade for the Shock Force Game System. Slot bases have been re-designed this month to fit standard size round plastic bases (supplied). Scale is 28mm, cast in Tin and sold unpainted. More classic K-FORCE / Shock Force scheduled to be released this summer.