Spot is a scientist although his inexperience in physical combat and in the use of his powers can be used to defeat him.
Basically speaking, *Spot is a scientist who worked at Alchemax, and got caught in its explosion while Miles was fighting Kingpin and turned It off, which turned him into the Dalmatian looking, no face, spot covered man he is now.* His spots are portals, but he doesn't have much control over them. He's goofy, and underestimated. He hates being considered 'a low level villain'.