Latios's 'Mons

Gengar
Ability: Cursed Body
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Shadow Ball
- Sludge Wave
- Focus Blast
- Taunt

Swampert @ Swampertite
Ability: Damp
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Ice Punch
- Waterfall
- Earth Power
- Rain Dance

OrgaNanagear (Heliolisk)
Ability: Dry Skin
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk / 30 Def
- Hidden Power
- Volt Switch
- Hyper Voice
- Dragon Pulse

Roserade
Ability: Natural Cure
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
IVs: 1 Atk
- Synthesis
- Sleep Powder
- Giga Drain
- Sludge Bomb

Super-Star (Starmie)
Ability: Natural Cure
EVs: 252 HP / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Rapid Spin
- Recover
- Ice Beam
- Scald

Linoone (Shiny) @ Sitrus Berry
Ability: Gluttony
EVs: 4 HP / 252 Atk / 4 SpD / 248 Spe
Jolly Nature
IVs: 26 SpA
- Belly Drum
- Play Rough
- Seed Bomb
- Return

Leafeon
Ability: Chlorophyll
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Leaf Blade
- X-Scissor
- Synchronoise
- Swords Dance

Infernape
Ability: Blaze
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
IVs: 27 HP
- Mach Punch
- Thunder Punch
- Blaze Kick
- Close Combat

Kangaskhan-Mega (F) @ Kangaskhanite
Ability: Scrappy
EVs: 252 HP / 252 Atk / 4 SpD
Adamant Nature
- Fake Out
- Power-Up Punch
- Drain Punch
- Sucker Punch

Sableye-Mega @ Sablenite
Ability: Magic Bounce
Shiny: Yes
EVs: 252 HP / 4 Def / 252 SpD
Careful Nature
- Knock Off
- Recover
- Will-O-Wisp
- Protect

Whimsicott
Ability: Prankster
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Beat Up
- Moonblast
- Giga Drain
- Encore

Metagross @ Metagrossite
Ability: Clear Body
Shiny: Yes
EVs: 4 HP / 252 Atk / 252 Spe
Adamant Nature
- Meteor Mash
- Zen Headbutt
- Stealth Rock
- Earthquake

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Roselia - Timid

Helioptile - Timid

Mudkip - Adamant

Torchic - Jolly w/ Baton pass

Corphish - Adamant w/ DD/Aquajet/knockoff

Tyrunt - Adamant w/DD/Firefang

Snivy - Timid w/Contrary

Drilbur - Adamant