Space Case is pretty excitable. He thinks humans all look the same and that they're "fleshy and gross". He also underestimates how easy it might be for humans to use his peers' weaponry on him. He's also fast. Extremely fast. In fact, that's the only reason he hasn't been defeated, as he has a mind that's on the fritz and hence is only slightly more intelligent than the average rock. He thinks he's survived all this time because of all the Cyberglyphs tattooed on his armor, but it's probably because he's just that fast, and fast targets are hard to hit.