DELTAMON 1.0 SETS
BY UPPA
-------------- QUEEN -------------- 
Utility Pivot (Queen-Delta) (F) @ Rocky Helmet / Black Sludge
Ability: Levitate  
EVs: 252 HP / 4 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Volt Switch  
- Sludge Bomb  
- Psychic / Focus Blast
- Taunt  
Very good mon at forcing progress. Psychic lets you hit opposing Queen and Rabbick, while Focus Blast lets you hit Royal Guard 1. 
Usually, Rocky Helmet sets will opt for Focus Blast to maximize early damage on Royal Guard 1 by punishing its Knock Off and U-turn, opening itself up to spam volt switch later.
Psychic + Black Sludge gives you more longevity as well as the ability to 1v1 Black Sludge Rabbick without having to drain each others' PP. 
Levitate is necessary over Download on this set in order to wall Rabbick and Royal Guard 1.
Choice Scarf (Queen-Delta) (F) @ Choice Scarf  
Ability: Levitate / Download
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Volt Switch  
- Sludge Bomb  
- Overheat / Focus Blast
- Psychic  

This aims to flip your matchup into Gerson, unboosted Flowery, Berdly, +1 Jevil, Shadow Mantle, and Roaring Knight. The latter three need prior chip damage to KO.
Focus Blast lets you more meaningfully chip down Royal Guard 1, but Overheat is a more comfortable option to click vs Gerson.
Download is nice, though it's less useful than you'd think since Jevils will always invest 4 EVs in Special Defense so Queen can't get a special attack boost.
Wallbreaker (Queen-Delta) (F) @ Life Orb / Choice Specs
Ability: Download  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Volt Switch / Thunderbolt
- Sludge Bomb  
- Focus Blast
- Psychic  
Fairly simple broken download abuser. Specs lets you ohko Royal Guard 1 with Focus Blast,
but Life Orb is often better since you won't necessarily lose all momentum if your move choice is called out.
Your common targets for getting a Special Attack boost are Winglade and Floradinn. 
Specs sets must be wary of Protect users like Jackenstein, Toriel, and Ambyulance who can all easily scout out your move.
-------------- JEVIL -------------- 
Z Crystal (Jevil) (M) @ Ghostium Z  
Ability: Cursed Body  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- Shadow Ball  
- Moonblast  
- Mystical Fire / Sludge Bomb
- Rapid Spin  
Very potent late-game cleaner and mid-game spinner. Never-Ending Nightmare complemented by Moonblast makes Jevil incredibly difficult to switch into, 
which allows him to ramp up speed boosts by forcing switches.
Mystical Fire provides an option to hit Floradinn, Gerson, and Winglade hard once you've popped your Z move. 
Sludge Bomb aids in breaking through Toriel and Head Hathy, who would otherwise threaten Protect to waste your Z move, and necessitate fishing for Shadow Ball drops to break through.
Offensive Utility (Jevil) (M) @ Spell Tag / Heavy-Duty Boots / Red Card
Ability: Cursed Body  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- Shadow Ball  
- Moonblast
- Stealth Rock / Will-o-wisp / Taunt
- Rapid Spin  
Jevil has an easy time pressuring the tier's hazard setters with Shadow Ball, especially with a Spell Tag boost.
Stealth Rock is the most splashable option for utility Jevil, but some teams might want to opt for Will-o-wisp to punish Undyne and Gerson harder than a single shadow ball would otherwise.
Taunt denies recovery from mons you can only 3hko, setup from mons like Blue and Mettaton after a Rapid Spin boost, and hazards from Floradinn.
Jevil has a lot of room to optimize and an extremely high skill cap, so I've opted to only share sets that have won in tournament so far.
-------------- UNDYNE -------------- 
Swords Dance (Undyne) (F) @ Undynite  
Ability: Dry Skin  
EVs: 252 HP / 252 Atk / 4 Spe  
Adamant Nature  
- Spear Barrage  
- Aqua Jet  
- Iron Head / Drain Punch / Taunt / Substitute
- Swords Dance

This mon is broken lol
Aqua Jet is necessary for denying Berdly, Gerson, Jevil, and Shadow Mantle from getting a move off on Undyne.
Iron Head is a straightforward stab option that lets you attempt to cheese past Jerry and Floradinn with Iron Head Flinches, 
albeit inconsistently and often losing a good amount of health in the process.
Drain Punch allows you to more easily 1v1 opposing Undyne, as well as trade up vs Shadow Mantle, Royal Guard 1, physdef Ambyulance and Gerson. 
However, this set is unable to meaningfully hit Jackenstein or Floradinn.
Substitute allows you to use opposing Floradinn as setup fodder, as well as Winglade lacking Sacred Sword.
Taunt achieves a similar effect, but may require some speed investment to avoid being speed-crept by Flordinn and Jackenstein.
* Due to having Dry Skin in her base form, a base-form Undyne without a fighting move effectively walls itself and can become volatile once both players have reached max attack.
* Additionally, running substitute or Taunt leaves you completely walled by opposing Undyne if they have not yet mega evolved. 
* Nevertheless, Taunt and Substitute are risky but highly rewarding options.

-------------- TORIEL -------------- 
Toriel (F) @ Heavy-Duty Boots  
Ability: Pyromancy  
EVs: 252 HP / 252 Def / 4 Spe  
Calm Nature  
IVs: 0 Atk  
- Cleansing Flame  
- Moonblast  
- Wish  
- Protect

Wish-protect Toriel has skyrocketed in usage as it happens to be a great backbone against opposing sun, as well as a great check to both Flowery and Shadow Mantle.
Wish passing is incredibly valuable for mons that lack reliable recovery like Royal Guard 1 and Queen. 
Cleansing Flame also lets you punish Bulk Up Jackenstein and Nasty Plot Shadow Mantle among others.
* You can go full spdef but the defense EVs allow you to check Lancer and Flowery and I find that superior to being a dedicated special wall.
-------------- SHADOW MANTLE -------------- 
Shadow Mantle @ Heavy-Duty Boots  
Ability: Shadow Shield  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
- Dark Pulse  
- Flamethrower  
- Toxic / Nasty Plot
- Flame Charge / Will-o-wisp

Mostly just mentioning them for the new development of Toxic as a way of hitting its checks in Titan Spawn, Toriel, and Head Hathy. 
Still an excellent cleaner whos access to Shadow Shield lets it 1v1 Jevil, Roaring Knight, and Gerson of all things. 
-------------- AMBYU-LANCE -------------- 
Assault Vest (Ambyu-Lance) @ Assault Vest  
Ability: Regenerator  
EVs: 252 HP / 252 Def / 4 SpD  OR
252 HP / 4 Def / 252 SpD
Relaxed / Sassy Nature  
IVs: 0 Spe  
- Body Press / Drain Punch
- Knock Off  
- Stomping Tantrum / Wish
- U-turn

Regenvest bot. Both PhysDef and SpDef are viable, mostly this mon just clicks Knock Off and U-turn while never dying.
Stomping Tantrum hits Download Queen and Mettaton, while Wish is useful for getting value out of Ambyu after it's been knocked.
Wish Passer (Ambyu-Lance) @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 252 HP / 252 Def / 4 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Wish  
- Protect  
- U-turn  
- Knock Off / Body Press

Core component of bulky offense, often paired with fellas like Undyne, Royal Guard 1, Queen, and Roaring Knight. It knocks, it pivots, it regens, it wish passes, you get the point.
-------------- LANCER -------------- 
Lancer (M) @ Choice Band  
Ability: Adaptability  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly / Adamant Nature  
- Spade Blast  
- Pursuit / Play Rough
- Rapid Spin  
- U-turn

Very straightforward early game wallbreaker. Having access to non-contact stab makes Lancer very difficult for bulkier teams to respond to, 
due to being faster than Queen and going unpunished by rocky helmet Floradinn and Winglade.
The other three slots are mostly filler. Pursuit has extremely few targets in this tier besides Bibliox and Berdly. 
Play Rough is an option to dent Ambyu-lance, but it's often better to U-turn on incoming Ambyu-lance to give entry
to something like a Life Orb Queen. Adamant gives you more favorable rolls to 2hko Winglade and Floradinn, 
but it leaves you slower than Queen, Berdly, Flowery, Shadow Mantle, and even Jevil.
------ SLOP SETS ------
* THESE SETS HAVE NOT BEEN PROVEN IN 
TOUR GAMES BUT I THINK THEY'RE GOOD *
Double Dance (Roaring Knight) @ Flyinium Z  
Ability: Savage Roar  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Black Knife  
- Brave Bird  
- Agility  
- Swords Dance

Supersonic Skystrike serves a similar purpose to Normalium Z Kartana, blowing up dark resists at +2 like Toriel, opposing Roaring Knight, Lancer, and Ambyu-lance.
Additionally, it serves as a non-contact way to ohko Floradinn.
Choice Scarf (Thrash Machine-Flame) @ Choice Scarf  
Ability: Flame Body  
Tera Type: ???  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Close Combat  
- Flare Blitz  
- Poison Jab  
- U-turn

Just an excellent typing for the meta. Flare blitz is very hard for many teams to switch into, and this is a monster with wish support.
Offensive Defog (Berdly) (M) @ Heavy-Duty Boots  
Ability: Neuroforce  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Psychic  
- Aura Sphere  
- Taunt / Thunderbolt
- Defog

Z Nasty Plot (Berdly) (M) @ Flyinium Z
Ability: Neuroforce  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Psychic  
- Aura Sphere  
- Hurricane
- Nasty Plot

Blue (M) @ Flyinium Z / Life Orb
Ability: Loving Dances    
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Revelation Dance  
- Moonblast  
- Hurricane  
- Quiver Dance
Whimsalot @ Flyinium Z  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Hurricane  
- Extrasensory  
- Flash Cannon / Substitute
- Quiver Dance

ok thats everything bye