This thread could use a break from the Lati twins...

Tapu Koko @
Expert Belt
Ability: Electric Surge
EVs: 244 SpA / 48 SpD / 216 Spe
Timid Nature
- Thunderbolt
- Dazzling Gleam
- Taunt
- Roost
Tapu Koko can score strong super effective hits against all three members of the core while outspeeding them by a mile.
The Raging Bolt matchup seems tricky since we miss the OHKO and they do a lot with Thunderbolt, but we can spam Roost to stall out Sun and Electric Terrain and Taunt to deny Calm Mind boosts.
Expert Belt is necessary to guarantee OHKOs on Charizard and Tusk.
which is insane honestly, koko is a bum
216 Speed EVs outrun Weavile. 48 SpDef EVs avoid the 2HKO from Raging Bolt outside of Sun, but in Electric Terrain.
Calcs:
244 SpA Expert Belt Tapu Koko Thunderbolt vs. 0 HP / 0 SpD Charizard-Mega-Y in Electric Terrain: 326-389 (109.7 - 130.9%) -- guaranteed OHKO
244 SpA Expert Belt Tapu Koko Dazzling Gleam vs. 0 HP / 0 SpD Great Tusk: 418-492 (112.6 - 132.6%) -- guaranteed OHKO
244 SpA Expert Belt Tapu Koko Dazzling Gleam vs. 0 HP / 0 SpD Raging Bolt: 281-331 (71.8 - 84.6%) -- guaranteed 2HKO
This is in both
Sun and
Electric Terrain:
252 SpA Protosynthesis Raging Bolt Thunderbolt vs. 0 HP / 48 SpD Tapu Koko in Electric Terrain: 153-181 (54.4 - 64.4%) -- guaranteed 2HKO
Once we stall out the Sun...
252 SpA Raging Bolt Thunderbolt vs. 0 HP / 48 SpD Tapu Koko in Electric Terrain: 118-140 (41.9 - 49.8%) -- guaranteed 3HKO
And after our own Terrain ends...
252 SpA Raging Bolt Thunderbolt vs. 0 HP / 48 SpD Tapu Koko: 91-108 (32.3 - 38.4%) -- 97.6% chance to 3HKO