What is the connotation of Jaggers referring to Drummle as "the spider"?

From the text, we can infer that Jaggers believed Drummle to be a bit creepy or suspicious.

"Pip," said he, putting his large hand on my shoulder and moving me to the window, "I don't know one from the other. Who's the Spider?"
"The spider?" said I.
"The blotchy, sprawly, sulky fellow."