I felt like it.
Posted a long time ago somewhere else, whatevz, help it out if you're so good.
Here is t!mmy's entry on it in his great MK guide:
[my quoting doesn't work well]
There are two different versions of this move.
The "aerial" and "ground" up b's as I call them, vary in knockback, direction of knockback, and [I would think] hitboxes, as well as range.
Aerial up B is basically better for KO's - Ground up b sets up Glide attack better.
Shuttle Loop from the Ground:
The sweetspot here is the very beginning of his ascent straight up - he then loops finishes right side up again in gliding position.
The parts of it that aren't the sweetspot barely hit at all - but it can lead into a "glide attack" after Metaknight is done with the Shuttle loop. The glide attack is actually a decent move, and can kill at 140ish.
Also - the entire Shuttle Loop from the ground hits people up.
Shuttle Loop in the Air:
The "sweetspot" of the aerial up b is pretty much the entire first half of the loop - at the very beginning it has severe knockback, but the entire dang loop has a large amount of evenly spread out knockback. So - it's the aerial up B hits people harder.
The aerial up b also goes a little forward at the beginning of the loop. It has more range than the grounded up b.
This one hits horizontally. Whether it hits your opponent left or right is actually hard to control without practice - I have incorrectly hit people towards the stage when edgeguarding with it too many times. However, if it is landed correctly near the edge, the horizontal knockback is strong enough to kill at around 60-70%. It's also why people should not try to jump at a recovering Metaknight. Making this mistake can result in a lost stock.
Instead of doing simply Shield -> Up B, try jumping just before the up B to get some extra range and horizontal knockback.
If your opponent is right in front of you, maybe use a different move than Up B to knock them back - maybe a rising Dair or Dsmash perhaps (setting up for an aerial up b edgeguard).
Loop Trixies
Edgeguarding/Gimping with Shuttle Loop:
Metaknight's best gimping move is, in my opinion, this. Hitting with the aerial Shuttle Loop while the opponent is near to the side of the screen and off the edge while they are in an easy position is going to be a prime goal when playing Metaknight.
Making it back: If you overshot the ledge, glide upwards a little and then fall back to try to grab the ledge.
Platform Canceling:
The Shuttle Loop cancels after the top of Metaknight’s loop if he lands on a platform.
An easy way to do this is on Smashville’s moving platform since it floats past the central platform.
Edgegrabbing and Shuttle Loop:
Shuttle Loop can grab at the top of the loop and anytime afterwards; this is why you can sweetspot only with proper spacing on some stages like Battlefield. To be honest, I would recommend other recovery options such as manual gliding and Side B (holding up) or Down B.
However, on Final Destination and Lylat Cruise, Metaknight can Shuttle Loop under the "lip" of the edges and not go vertically up, but still grab the edge because the lip prevents the Shuttle Loop from passing the ledge, and he can sweetspot these edges with ease.
On Lylat Cruise especially, if you Shuttle Loop under the lip, you can easily grab the ledge while moving rather strangely.
Norfair Maneuvers:
On Norfair, you can use the looping effect of the Shuttle Loop to go from one edgegrab to grab another higher edge very easily, while threatening your opponent with the high knockback and speed of your attack.
SHOOP DA LOOP
Good luck with this beast of a move.
Posted a long time ago somewhere else, whatevz, help it out if you're so good.
Here is t!mmy's entry on it in his great MK guide:
[my quoting doesn't work well]
There are two different versions of this move.
The "aerial" and "ground" up b's as I call them, vary in knockback, direction of knockback, and [I would think] hitboxes, as well as range.
Aerial up B is basically better for KO's - Ground up b sets up Glide attack better.
Shuttle Loop from the Ground:
The sweetspot here is the very beginning of his ascent straight up - he then loops finishes right side up again in gliding position.
The parts of it that aren't the sweetspot barely hit at all - but it can lead into a "glide attack" after Metaknight is done with the Shuttle loop. The glide attack is actually a decent move, and can kill at 140ish.
Also - the entire Shuttle Loop from the ground hits people up.
Shuttle Loop in the Air:
The "sweetspot" of the aerial up b is pretty much the entire first half of the loop - at the very beginning it has severe knockback, but the entire dang loop has a large amount of evenly spread out knockback. So - it's the aerial up B hits people harder.
The aerial up b also goes a little forward at the beginning of the loop. It has more range than the grounded up b.
This one hits horizontally. Whether it hits your opponent left or right is actually hard to control without practice - I have incorrectly hit people towards the stage when edgeguarding with it too many times. However, if it is landed correctly near the edge, the horizontal knockback is strong enough to kill at around 60-70%. It's also why people should not try to jump at a recovering Metaknight. Making this mistake can result in a lost stock.
Instead of doing simply Shield -> Up B, try jumping just before the up B to get some extra range and horizontal knockback.
If your opponent is right in front of you, maybe use a different move than Up B to knock them back - maybe a rising Dair or Dsmash perhaps (setting up for an aerial up b edgeguard).
Loop Trixies
Edgeguarding/Gimping with Shuttle Loop:
Metaknight's best gimping move is, in my opinion, this. Hitting with the aerial Shuttle Loop while the opponent is near to the side of the screen and off the edge while they are in an easy position is going to be a prime goal when playing Metaknight.
Making it back: If you overshot the ledge, glide upwards a little and then fall back to try to grab the ledge.
Platform Canceling:
The Shuttle Loop cancels after the top of Metaknight’s loop if he lands on a platform.
An easy way to do this is on Smashville’s moving platform since it floats past the central platform.
Edgegrabbing and Shuttle Loop:
Shuttle Loop can grab at the top of the loop and anytime afterwards; this is why you can sweetspot only with proper spacing on some stages like Battlefield. To be honest, I would recommend other recovery options such as manual gliding and Side B (holding up) or Down B.
However, on Final Destination and Lylat Cruise, Metaknight can Shuttle Loop under the "lip" of the edges and not go vertically up, but still grab the edge because the lip prevents the Shuttle Loop from passing the ledge, and he can sweetspot these edges with ease.
On Lylat Cruise especially, if you Shuttle Loop under the lip, you can easily grab the ledge while moving rather strangely.
Norfair Maneuvers:
On Norfair, you can use the looping effect of the Shuttle Loop to go from one edgegrab to grab another higher edge very easily, while threatening your opponent with the high knockback and speed of your attack.
SHOOP DA LOOP
Good luck with this beast of a move.
