Just so you know, Sheik isn't top tier. She's probably not even high tier. Don't lie to yourself about how amazing you might think Sheik is. You're pretty much going in with a more-or-less average character, meaning you'll have to rely more on your own playskill and matchup knowledge than you might like. With that said, expect to see these characters a lot in a tournament:
Meta Knight (VERY common; hard matchup)
Mr. Game & Watch (may or may not be common; hard matchup)
Snake (VERY hard matchup)
ROB (may or may not be common; watch out for the range)
Toon Link
Pit (always an annoying matchup)
Wolf
Marth
Falco
And maybe some of these:
Dedede (easy, once you learn how to play against him)
Olimar
Lucario
Pikachu
Fox
Ike
Sheik will have serious trouble against Snake, Meta Knight, G&W, and to a degree Lucario. You'll definitely want to know how to play properly against all of these characters. The only one who's particularly easy to beat in these lists is Dedede. If any of you have any knowledge on the matchups against these characters, feel free to share.
MATCHUP STUFF:
Meta Knight
Pit
Marth
Falco
Dedede
Lucario
Pikachu
Fox
Ike
Meta Knight (VERY common; hard matchup)
Mr. Game & Watch (may or may not be common; hard matchup)
Snake (VERY hard matchup)
ROB (may or may not be common; watch out for the range)
Toon Link
Pit (always an annoying matchup)
Wolf
Marth
Falco
And maybe some of these:
Dedede (easy, once you learn how to play against him)
Olimar
Lucario
Pikachu
Fox
Ike
Sheik will have serious trouble against Snake, Meta Knight, G&W, and to a degree Lucario. You'll definitely want to know how to play properly against all of these characters. The only one who's particularly easy to beat in these lists is Dedede. If any of you have any knowledge on the matchups against these characters, feel free to share.
MATCHUP STUFF:
Meta Knight
Meta Knight is a real tough match up. I hate fighting MKs couse hes real hard to keep off the stage. And with Sheiks not soo great KO Power, it becomes a real problem. F'tilt followed up by something (grabs, airs, more tilts ect. your choice) can really help. I usually go for a N'air or F'air after F'tilts and follow up to try and edge guard him. The thing with Meta is that hes real hard to get clean hits on, soo what I say is easier said then done. Up-B out of Shield works wonders for me. Needles, they seem to rack up pretty good damage early on. F'air to Needles is pretty good in low damage, then just letting a few needles go everyonce in a while to stop Meta in his path. Gives you some time whether they shield or not. They are also pretty good when hes off the stage. Spaced out B'airs are real good, for both edge guarding and just dealing damage. Grab alot. When I get a grab I mainly go for D'throw then depending on how the DI I'll try to follow it up. Usually with a U'air. Jabs are pretty good, the jab combo can rack up damage. Or you can go for jab to D'smash. All three of Sheik's Smashes are pretty good imo.
When fighting him watch out for his Up-B, it is rediculous. Watch out for many of his moves. Spacing plays a big role in this match up.
Okay, so playing against Meta Knight for a while, I've found that you can lock him in ftilts for a VERY long time, and typically finish with either a utilt or usmash to instantly bring MK somewhere in the realm of 60-70% damage. Getting that initial hit in will be hard, but well worth it.
Finishing him is kind of difficult. Vanish is, of course, EPIC MINDGAMES LULZ, but you'll have to look at all your available options. Generally, Meta Knight has way more priority than you in the air, so spamming fairs is out of the question, and even bair/uair is kind of risky. Due to his ridiculous recovery, if you must use an aerial, go with uair. Nair is the safest bet to keep yourself protected while in the air, so use that if he's currently on the ground.
For ground finishers, like NeoHub said, all three are usable. Dsmash is the only one fast enough to not get beaten out in speed by MK's dsmash, but it's the weakest one; fsmash is unreliable, but it can punish spotdodges pretty effectively; usmash KOs at the lowest %, especially against a light character like Meta Knight, but it's also by far the most punishable smash if you miss.
Do NOT attempt to edgeguard Meta Knight offstage unless you REALLY have a good setup for it. If he sees an edgeguard coming, he can just Up+B on reaction and possibly end up KOing you in the process. Glide attacks are also tricky to beat, though coming in from above might work in that case. If you can't get any good setups and the MK is keeping himself in a relatively safe path of recovery, try to accumulate a little more damage with your needles.
When not busy chaining ftilts on him or anything, keep yourself moving. Charge needles when safe, use your jabs and tilts (all of them) to protect yourself. If you must approach, do so carefully, because MK can severely punish you from his shield if you screw up. Possibly your best option would be an auto-canceled aerial into jabs to punish shieldgrab attempts.
Mr. Game & Watchmetaknight is hella hard to get inside at all
for GW just constantly look for the shield grab cause thats all GW's do is attack your shield
SnakeIf G&W tries to approach with his nair and tries to auto canal it you can avoid and counter him with a well timed crouch dtilt.
snake just KOs shiek at ridiculously low percents and is hard for shiek to kill
Snake is indeed a really tough match-up for Sheik! Ugh... I get scared every time I face a Snake online now, just because I've had my *** kicked by so many good Snake players now.
He's really tough to approach because of his explosives, first of all... and when you DO get close to him, he can knock you away really easily even with just normal attacks. Also, his UpSmash makes attacking from the air dangerous.
Basically, there's a long long list of ways in which Snake can effectively kill Sheik, and a very short list of ways Sheik can effectively kill Snake. It's **** frustrating when he kills you at under 100% with a F-Tilt, while you sometimes can't kill him at 150% with a smash attack.
Snake is annoying. His mortar slide is a really fast approach that can really hurt if you don't see it coming, and its speed allows crossups too (though those have become less effective in Brawl because you can just unshield now). Snake's attacks in general deal a lot of damage, have a lot of range and priority, and HURT. He's also heavy as hell and has a recovery that goes really long distances, so Sheik's already weak KO potential is further weakened and her bair edgeguard is practically useless.
Fortunately, there are some things you can do. Sheik's far more maneuverable in the air, and needles can interfere with Snake's use of things like grenades. Her ftilt can properly lock a Snake for a while at low-mid %s due to his heavy weight. Sheik also has a decent grab range and can take full advantage of the Cypher-grab gimp. Her fair might be especially effective in forcing a Snake to recover from below the stage...
You may want to consider using Zelda as well, though. Her attacks carry lots of destructive potential, she has a much more potent projectile for playing the far-away game, and Nayru's Love can really mess around with Snake's grenades. (don't think it does anything to mortars) Yeah, if Snake reaches a high %, definitely go Zelda, 'cause chances are you're not going to KO Snake below 180% with Sheik if you missed the chance to gimp.
I tested out Naryu's love against the mortars because i knew mario's cape reflected them. Naryu's Love will deflect the mortar back at snake, however the delay after the move can be dangerous so use it only if you find yourself with no other way out
ROBFun fact about the Nikita Missiles: If you throw a needle at one (coming straight for you), it will rise far enough in the air and Snake will lose control long enough for you to RUN under it.
Toon LinkTransform into Zelda.
But really, it's going to be a long hard road for you. You can rack up damage with your tilts easily, but you're going to have to eventually kill ROB with an f-smash, u-smash, or possibly an up-air.
You can combo ROB out of your d-tilt easily, and since he has a laggy d-air you can juggle with u-air.
It's a hard matchup for Sheik. You have to constnatly keep up the pressure, get those grabs in, then get ROB above you. When he's at higher %, try to kill him with an f-smash or u-smash. That's about all I got.
Pit
WolfTo be honest, I find the match up to be pretty well in Sheik's favor. Here's what I suggest:
•Use your Ftilt to combo him (I recommend using it twice, then shield-grab him) then throw him and chase.
•Sheik's aerial power lies in her Nair, Bair, and Fair (her Uair isn't bad either, It's just not as effective as it use to be. It can however, be a good finisher if the opportunity arises). I suggest that after a series of Ftilts, once Pit is suspended a bit in the air from the attack, jump and do a Nair, which comes out nearly right away. You could also do a Fair and chase him doing more Fairs in succession.
•Sheik's Usmash is a good finisher, along with her Dsmash. Sometimes her Fsmash doesn't hit with both kicks, otherwise it's usually effective. All of Sheik's comboing potential comes from her tilts. As I've mentioned Ftilt is amazing, as it is so quick, with no lag, and comes out before most enemies have a chance to respond from the attack. It's also worth noting that her Utilt is very good as well.
•Using your needles is helpful, as some have pointed out. Try charging them if you have a chance, if not, single needles will suffice. Though, against a character like Pit, chances are his arrow will be more annoying than your needles. So forcing him to come to you via needle spam is unlikely as his arrows probably out-prioritize them.
•Keep in mind one of Pit's greatest weaknesses: His ^B can only be used once. The greatest aspect of Sheik in Brawl, is the addition of her chain as a tether. Also, the fact that you can use your chain/vanish independently is a huge plus (one doesn't have to worry that if the chain doesn't reach the edge they are dead, because they can still vanish after using the chain tether). In my opinion, vanish should never be used as a recovery, the chain is just too good. Sheik's edge-guard game is amazing.
After you chase an enemy off the edge attacking them with aerials, you can very quickly tether to the edge. Tethering also allows for a lag-less instant recovery unlike any regular recovery. This means that one can immediately go from tethering the edge to attacking, jumping, or rolling. This is great for Sheik because she's now an incredibly versatile character. I think you also have a few frames of invulnerability due to the fast recovery.
What I do when edge-guarding with Sheik is chase the person off with any aerial attack, notably Fair, then I tether to the platform, and immediately go after them again after having renewed my jump, then I repeat. It makes for a mean edge-guard, one unlike most every other character in the game.
Now why is edge-guarding so stressed here? Simple, due to Pit's inability to execute a second ^B, he is extremely easy to gimp. Just keep on him, as soon as his springs forth his wings, make sure you hit him, at this point his only chance of survival is DIing to the nearest ledge. His chances of DIing anywhere near a ledge will be slim, especially because you have a tether recovery. You can beat him and most other characters to the edge.
Marth
Falco
Dedede
Sheik runs pretty low to the ground, so you should be able to dash past Waddles at the right range.
Just tilt combo/throw combo him when you're up close.
OlimarI've actually never have had any real problems fighting D3
He's easy to get into a tilt lock because how fat and heavy he is
His usual constant waddles throwing leaves him greatly open if you are ever enter it's striking distances (the luck spike one is the only that is deadly and is how must D3 get there kills on me because how it changes it's trajectory to hit you, which is a pain but it isn't too hard to shield)
His range in the air and ground is better then yours but besides his down smash and A-A-A combo he has a pretty sucky ground game which means staying close to him is the best way to go.
Forward suck, and if it hits you it's about as embarrassing as getting hit by a falcon punch.
Up smash is OKAY but nothing special
forward tilt is just a pain but doesn't do enough damage or knock back to even take note of besides it's range and I've never seen a D3 user use his dtilt.
The only good aerials he has is his bair which acts like a sexy kick and dair because of the range and damage it can do but it's easy to dodge.
He can't combo, his defensive game isn't good, and has a easily predictable recover which is easy to gimp.
A pretty easy match for Sheik in comparison to the other higher tier characters.
Lucario
Pikachu
Fox
Ike
In my experience, Ike's can be easily manipulated. I'm not saying it's always an easy fight in the least but more than often, I have the upper hand. It's all in mastering the edge-guard. Know that his side-B from a far distance can be intercepted, and make them fall almost straight down (only use in far distances when applicable, will take experimenting)
And in terms of the UP+B, it can be edge-hogged with precise ledge invincibility. I start with a tether, dodge the first part of the Aether with a quick tether-to-edge movement, and then when they come down I use Melee tactics and come up with that short period of invincibility. By habit, I use the distant recovery (L/R) but, I should probably try with the quick up-and-go one. If they see it coming (usually do) they'll land on the ground, and you NEED to take advantage of that opening. If not to kill them via edge-guarding, it'll rack up plenty of damage with proper execution.