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Considering that they said they originally weren't even going to SHOW the battles not featuring Ash in an interview with writer Tomioka, that would be mean Ash VS Steven would be the only on-screen battle, and the rest of the battles would be off-screen shown only as still sketches. The...
:sm/tauros:
Pokémon: Tauros
Niche: RBY OU
Stats: 75/100/95/70/70/110
Type:
Abilities: Intimidate, Anger Point, Sheer Force
New Moves:
Removed Moves:
Descriptions: Tauros gets its Gen 1 Special Attack stat back.
:sm/alakazam:
Pokémon: Alakazam
Niche: GSC or RSE OU
Stats: Unchanged
Type...
:sm/volcanion:
Name: Volcanion
Type: Fire/Water
Abilities: Water Absorb / Steam Engine
New Moves:
Removed Moves:
Justification: Steam is the entire theme of this Pokemon, and Steam Engine gives it another potential playstyle.
:swsh/stunfisk::swsh/stunfisk-galar:
Name: Stunfisk / Stunfisk-Galar...
Fusion: Zeraora/ Sirfetch'd
Type:
Stat Distribution: 68 HP / 129 Attack / 81 Defense / 81 Special Attack / 83 Special Defense / 80 Speed
Ability: Volt Absorb + Scrappy = Zappy (The Pokemon can hit Ground-type Pokemon with Electric-type moves)
Notable Moves:
: Plasma Fists, Close Combat, Knock...
It's intentional. Meltan can only evolve in Pokemon GO, thus it and Melmetal are both coded as single-stage Pokemon in Sword & Shield, which is also why Meltan can't use Eviolite.
You might as well just use Eviolite Galarian Mr. Mime instead. It's bulkier and faster. The thing that gives Mr. Rime an edge over Mime is the fact that it gets Slack Off, but Assault Vest takes that away.