The variety is called Warty Goblin F1. I named it and introduced it to the market back in 2013.
It was created by cooperation between a commercial breeder and an farmer in Michigan. The farmer had a roadside stand that he sold his pumpkins. He developed new and weird looking ones by a method called mass selection.
He also grew some of the best damn strawberries I have ever had. I usually got lost in his patch grazing for a while when I visited his place
It is a hard shelled gourd type. These are not designed for eating.
The warts are common in Cucurbita pepo gourds. They are simply tissue growth and not related to sugar content. The corking formation on traditional pumpkins like winter luxury is a different process.
When I introduced the variety all of the seed dealers told me It would never sell. They were too ugly. They don't seem to remember that anymore... lol.
All of the Cucurbita pepo species are edible. The hard shelled ones have thin flesh and don't taste as good. The best eating pumpkins are not Halloween types at all, but Cucurbita moschata. Processing pumpkins for pies is usually Dickinson's field. This is the same species as butternut winter squash.