Not exactly sure what you mean. He has Standard, Orange, Pink, Light Blue, Grey, Purple, Turquoise hat with green shirt, and a odd Yellow color as his swaps.
The online component as in the Nintendo Network as a whole? If so, it works really well. Only have had lag in about two matches, but it got fixed up really quickly. I have yet to play in the "For Fun" rooms, but I don't think you can add people in "For Glory" so I would assume it's the same way there. I have yet to play with friends, so I'm not sure if you can let randoms join.
Once again, it may be the boundaries, but with Jiggly over 110% I couldn't KO with the up throw. Also, I believe the Up-Throw has been changed. You have to move the Control Stick in a certain way to have them go off screen, otherwise Kirby only takes them about a jump's length into the air. It seems to me that Kirby can combo. All characters have custom moves, including Kirby,