"Unstable."

Kaine has face-melting powers--his wall-crawling abilities have expanded a bit; but he doesn't use web-shooters? Even as the Scarlet Spider? I suspect he does that to set himself apart from other Spider-Men; but he could if he wanted to. I also figure Kaine, like Ben, is probably more financially secure than Peter, if only because they aren't above taking shady money if they find it.