Slambo is a 1985 Warhammer Fantasy Battle Chaos Warrior sculpt by Jes Goodwin. The attribution comes from Bob Naismith via Instagram – there’s not a record in White Dwarf or the catalogues of who sculpted the individual members of this range that I can find!
360deg view:
He can be seen in the March 1987 French catalogue as a C35 Chaos Warrior:
And painted in this flyer – not sure what the date is on it:
A Spring 1987 catalogue page from the Citadel Journal shows him as part of the CH2 Chaos Warriors range:
Painted:
