Mark X
An alien-like robot, the Mark X was the first Spider-Slayer to attack Spider-Man in the "Invasion of the Spider-Slayers" saga. Attacking Spider-Man while he was swinging through town, the Mark X was close to eviscerating Spider-Man until a nearby construction worker managed to decapitate it using a jackhammer. Alistair later rebuilt the Mark X to be used in his Spider-Slayer army, which was destroyed by Spider-Man.
Mark X was extremely fast and agile and had a large amount of spikes and claws protruding from its body.
Read more about this topic: List Of Spider-Slayers