Introducing the Ming Thing! Cereus forbesii monstrose to be precise.
In Cereus, the mutation happened quite a long time ago, in nature, and now it's deliberately cultivated. It didn't escape from some lab in West Texas. That's a relief.
Monstrose cacti can be a little more rot-prone, but can also be propagated by cuttings, which is a big plus.
So what do you think of the Ming Thing? Fabulously freaky or just URGH?