It's just a character backroomer, honestly that doesn't mean much. As for Jiggs, here's what I know. A lot of them try to recover with rollout, which you can easily predict the path of and take advantage of its down time. Stay out of the air as much as possible. Jigg's best KO move is her fsmash, which is pretty slow, so you should be able to dodge. Her strongest assets are her aerials, so stay out of the air as much as possible. Make sure to DI out of a drill (dair) or you may get rest'ed. Rest isn't an auto-KO though, so try to DI it. Jiggly may have a decent recovery, but it's very predictable and isn't very intimidating (unlike MK's, whose upb will gimp/KO you). However, she can use aerials in between jumps obviously, just watch out for that. I wouldn't be surprised if you could get off a spike or two. If you're Samus, remember that Jiggly doesn't have any projectiles or defensive moves (i.e. reflector). A lot of Jiggly's attacks lead into other attacks of the same kind (like multiple uairs, or sideb's/pounds). Her range is overall pretty poor as well. But she's small, so some of your attacks may go over her head. That's all I got for now, best of luck. I could technically give you some Jiggz practice, but 1. mine isn't that great 2. you only have a half hour. You did face mine once though.