An Elite Richter's Guide to Dealing With All Characters

[Practicalities]

AUTHOR'S NOTE : The guide's just from my experiences. I got to Elite Smash recently, pretty cool place. Anyway, let's get into it.
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The Belmonts excel at keeping distance and performing tasks that keep your opponent at bay and guessing what you're about to do. They also has a great variety of tools that can be used in many ways to overwhelm your opponent, making them a force to be reckoned with.

However, there are characters that can give them problems. The Belmonts' main weaknesses revolve mostly around having to fight in close-quarters and aerial combat, which they're not used to whatsoever.

This guide will attempt to teach you the basics on how to not fall to 1 GSP.

Let's begin!

Mario - His cape can be a really big annoyance for you, especially when using key projectiles such as your axe or your cross. Your whip will be a great factor in dealing with him and overall winning the battle.
Donkey Kong - Heavy characters, in general, are not going to have a fun time against the Belmonts in any way, shape, or form. While there can be exceptions, the general rule of thumb is to just keep them out and deal as much damage as you can.
Link - This battle is all about who can land their shots better. Link's playstyle, with his new-and-improved bomb mechanic, can become Gimp City if you fall for his tricks. Using height against him is mostly going to be key in defeating him. Using aerials such as F-Air to keep distance and N-Air to eliminate combo potential is going to be really useful. However, if he's also playing long-range most of the time, learning how to aim your axe and cross will be beneficial.
/ Samus/Dark Samus - Mostly the same as Link, but with a key difference - the charge shot. That's going to be one of the Belmonts' main openings. Samus players, if they see that their opponent is about to attack them, will do one of a few things : do nothing and get hit (optimal situation), roll away (requires prediction but is optimal) or spotdodge (also a little prediction). Avoiding the charge shot when fired, as well, is going to be the factor that decides whether you lose a stock or not.
Yoshi - Yoshi can close distances pretty well and can be a real annoyance. Your best bet is keeping him at distance and predicting his egg roll to make sure you're comfortable. One last thing : make sure that you NEVER get swallowed. EVER. That's basically Death : 101.
Kirby - While the matchup against Kirby is pretty straightforward (don't get eaten, don't fall for the Down-B, etc.), his air game can range from annoying to NIGHTMARISH. A good Kirby will PRIORITIZE their air game against you. Predict this movement by shooting aerials of your own and using the axe and cross in the air to your advantage, and be careful of any gimps.
Fox - This traverses in one of the more difficult matchups for the Belmonts. Characters like Fox can easily close the distance and set up for some easy combos if you're not careful. Be warned, as well, that your edgeguarding tools won't be as effective against Fox, considering that his recoveries are really fast and can get him into the fight quick. The best way to deal with him is to use one of your most (if not the most) useful tool the Belmonts have : the cross (side-special). It can catch characters like Fox off-guard and sets up for an aerial combo if you're quick enough. Predicting how Fox is going to get off the ledge will also be a life-or-death situation. Using both of down-tilt's utilities will also become divine intervention for you.
Pikachu - See Fox, but it becomes even more important to not get gimped.
Luigi - One of the more easier matchups, as Luigi doesn't have a lot of options to get close to the Belmonts. His Down-B can be pretty rough to deal with at times, however. Just keep an eye out for that, use the Belmonts' playstyle, and you should be good.
Ness - The only real tip of advice you can get is to be really cautious with fire. What I mean by this is to keep an eye out for Ness' PK Fire, as that can deal a lot of damage very quickly, which can become devastating if you're not careful. Otherwise, It's a pretty standard matchup.
Captain Falcon - It's a less stressful version of Fox. Good Falcons are generally cautious when it comes to taking damage, as their recovery isn't the greatest-ever. A standard matchup overall.
Jigglypuff - Get ready for the final boss. It's basically Kirby, but practically ONLY aerials/side-B when it comes to good Jigglypuffs. My only advice is to predict aerials and counterattack with aerials, and use your cross and axe as much as possible off-stage. In some cases, you can also use down-B to deny Jigglypuff the option to fake you out with a ground attack, giving you more opportunities.
/ Peach/Daisy - Just watch out for the things she pulls out with down-B. Otherwise, not as bad as you would think.
Bowser - See DK.
Ice Climbers - Separate Nana and Popo, and DO NOT get grabbed against good Ice Climbers. Ever.
Sheik - See Fox.
Zelda - Sort of a pushover. The down-B is really predictable, and the only real way she can deal with you is to teleport to you. Otherwise, keep your distance.
Dr. Mario - Mario, but just a lot easier to play against.
Pichu - Keep your distance, keep an eye out, and you should be good. Otherwise, see Pikachu.
Falco - Fox with better aerials and more predictable movement.
/ Marth/Lucina - The main goal of their playstyle is to wall any opponents out and keep them in check. However, the Belmonts can reach farther and keep them at bay. The main problem is the characters' F-Air combos and the side-B, but you should be cautious nonetheless.
Young Link - Imagine Link in Smash 4, but smaller and more agile. It's all about keeping memory of how the Young Link throws their projectiles, and what they do to punish you. All I can say is to keep track of what they react to, and do not get gimped.
Ganondorf - See DK.
Mewtwo - A mix of heavy characters and Samus. Just try to keep track of their actions, and you should be good.
/ Roy/Chrom - Roy/Chrom is mostly just like Marth/Lucina. Just avoid Chrom's up-B gimp-thing.
Mr. Game & Watch - Like Luigi, there aren't many ways for him to close the distance. Just watch out for any gimmicks, like the Judge or the Bucket, they try to pull.
Meta Knight - Like Kirby, but he has more ways to close the distance. Predict actions like his down-B, and he shouldn't be as sneaky as people anticipate.
/ Pit/Dark Pit - Not much they can do. Just be mindful of the side-B.
Zero Suit Samus - Like Fox, but with a really detrimental tool at her disposal : the neutral-B. This opens up a ton of combo potential for her. Avoid it at all costs, or you WILL lose.
Wario - All that has to be watched out for is the fart and the chomp. You're good, then.
Snake - It's all about who can use their projectiles in the most effective manner. However, this shouldn't be too hard, considering his projectiles are easy to predict. If he recovers high, a good aerial or axe should finish him off.
Ike - Not many ways to close the distance. Just be cautious about his aerials and smash attacks, especially his F-Air and F-Smash.
Pokemon Trainer - For Squirtle, see Pichu. Ivysaur is just a pushover. For Charizard, It's mostly like all the other heavy characters, but you have to be very cautious about his side-special.
Diddy Kong - See Fox.
Lucas - See Ness.
Sonic - Another pretty difficult matchup for Richter. He has the fastest running speed in the game, making him difficult to track down and predict his actions. All you can do is to use your cross and fire to your advantage, and try to get an early KO by punishing his recovery when he goes above the ledge with F-Smash.
King Dedede - Like DK, but with a really good recovery. Just predict where he will land, and punish him for it. If he cancels the recovery, punish him if he gets too close to the ledge.
Olimar - Keep your distance, and he can't do much about it. The Pikmin won't exactly be a detriment, either.
Lucario - His only real notable feats are when he's high damage. Don't get grabbed by the side-B or grabs during that phase, keep your distance, and just try to take advantage of his high percent.
R.O.B - His most reliable attacks are his laser and gyro. Avoid and predict those, and make sure he doesn't pull off that gyro combo on you. Also, be wary of his aerials.
Toon Link - Like the Links, but kind of a mix between them. Shouldn't be too much of a problem.
Wolf - See Fox.
Villager - Here comes the bulk of your problems. Villager can abuse his slingshot to make sure that you can't attack much, and can use the pocket ability to absorb your projectiles and keep up the pressure until he releases the projectile. His Lloyd Rocket will also be a really big annoyance, as well. All I can say is to use predict when he's least ready to pocket a projectile, use your aerials to your advantage, and get him out of his comfort zone.
Mega Man - Shouldn't be that much of a problem. Just make sure he doesn't try to abuse his aerial mechanics and keep him at a distance.
Wii Fit Trainer - Just a pushover with no real ways to keep up pressure. Just avoid the charge shot (which isn't even that effective).
Rosalina & Luma - Not much of a problem. Just make sure that desync mechanic doesn't get the best of you.
Little Mac - Probably one of your easiest matchups. His aerial game is non-existent, and your projectiles cover a ton of his options. His KO Punch shouldn't be a problem, either, considering that it goes away if he gets hit about two times. Gimping his is also incredibly easy, as well.
Greninja - See Fox.
Palutena - Avoid the aerials, don't get gimped, and be careful of her actions. Otherwise, keep your distance.
Pac-Man - Against good Pac-Man players, turn your awareness levels up to the max level. Keep an eye out on what tricks he's pulling. If you see a fire hydrant, you can easily knock it back and use it in your favor. Like others, keep your distance.
Robin - His projectiles are easy to predict, and he has the mechanic where his attacks can get dull if he uses them too much. Keep your distance, keep track of his projectiles, aim your projectiles well, and you should be good.
Shulk - The only real ways he can close distances are through his aerials or Jump/Speed arts. If he gets too close for comfort, use press down-tilt two times in succession to lunge yourself forward and out of harm's way. Not much of a problem.
Bowser Jr. - Another pushover. Keep your distance, and you win.
Duck Hunt - A difficult matchup. His projectiles are more complicated and hard to keep track of than yours. He covers a lot of options and can fake you out with some aerials and grabs. Keep an eye out for that pesky pooch, and keep your distance.
/ Ryu/Ken - A lot of their playstyle revolves around combo potential. Make sure they are unable to do that by keeping track of what they're about to do, and launch your projectiles to keep them at bay.
Cloud - He's sort of a wild card. His limit meter shouldn't be that much of a problem, as the moves can be easy to predict. Be wary of his aerials, and you should be good.
Corrin - His range is pretty good, but that's all you really have to worry about. Otherwise, block his options and keep distance.
Bayonetta - Surprisingly, sort of a pushover. Just keep distance and cover her options so that you don't get comboed.
Inkling - Like Fox, but can rack up damage really quickly with their ink. Try to keep distance and not get damaged so often.
Ridley - Like DK, but the side-B can really throw you off-guard. Keep an eye out.
/ Simon/Richter - It's all about who can use their projectiles most effectively. Another really key part is to understand how to gimp. With projectiles like the down-B, where you can stop all of their air momentum. It all depends on how well you know your specials.
King K. Rool - See DK.
Isabelle - Like Villager, but has that really detrimental fishing rod. Keep a very sharp eye out and think about your approach.
Incineroar - Like other heavy characters, but has that revenge-counter mechanic. If he gets a counter off of an attack with mid-high damage, keep him away at all costs. If he hits you, especially with a side-B or a smash attack, say goodbye to a stock.
// Mii Fighters - Not really a hard matchup. Same rule for the Belmonts' playstyle applies to all of them.

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That's some of the advice I can muster to aspiring Belmont players! If you have any comments, advice, questions, etc., comment down below!
Farewell!