Truthfully, Wondercat is mostly just interested in the shiny golden string.

Hey Wondercat, don’t you want to go out and accomplish heroic feats, defeat all the bad guys and save the day? – No thanks, I’d honestly just rather sit here rolling around in this rope. Look! It’s so shiny! I’m gonna bite at it! ah ha ha!

This is why cats are not superheroes. I certainly wouldn’t trust any cat with an invisible jet. So many unsuspecting birds.