Probably a stupid question.. but im new to the smashboards.... hi!
but as a stupid question... do any of ness' aerial moves auto-cancel on to the ground?
and if so, which aerials?
So every aerial has a total duration. If you finish the total duration of any aerial before you land, you land with no landing lag.
Sometimes you can land before the total animation of an aerial ends, but you'll land with no landing lag. This is called the autocancel window. So if you land at the end before the animation of the move has ended but after the autocancel window has started, then you will land with no landing lag.
If you land before the auto cancel window starts, you'll have landing lag. The landing lag is different for each aerial.
In a full hop you can completely finish all of Ness's aerials, and have no landing lag. In a short hop you can finish all of Ness's aerials and not have landing lag, except for dair. If you perform an aerial late into your short hop, you'll land with landing lag though.
Ness's uair, nair, and Bair don't have that much landing lag. His dair and fair have quite a bit of landing lag.
You can check the frame data thread if you want more specific information on landing lag and auto cancel windows. I also suggest that you go into training mode and explore just how late and early you can do Ness's aerials in a short hop and still land with no landing lag.