Cool. Hope I get this right.
Pokémon: Exeggutor-Alola-Hiss
Egg Group: Grass
Stats: 95 HP / 105 Atk / 85 Def / 125 SpA / 75 SpD /
79 Spe
Type: Grass / Dragon
New Moves: Defog, Power Whip, Coil, Leaf Blade
Abilities: Harvest / Contrary / Frisk
Dex Entry: This particular variant of Alolan Exeggutor quickly realised that it faced too much competition with others for sunlight, so instead of elongating further, its body adapted into a massive vine-like structure, slithers across the ground until it finds a tall enough structure (often other Exeggutor), and climb and twine their way around it to the top, getting all the sun it needs.
Competitive Use: Now a very powerful wallbreaker, A-Eggy-Hiss can abuse Contrary to be a potent threat. It can be both physical or special depending on what the player wants.
Pokemon: Electivire-KungFu
Egg Group: Human-Like
Stats: 75 HP / 123 Atk / 67 Def / 95 SpA / 85 SpD /
101 Spe
New Moves: Close Combat, Swords Dance, Mach Punch, Nasty Plot, Vacuum Wave
Abilities: Motor Drive / Vital Spirit / Iron Fist
Dex Entry: Electivire trained in the difficult to master art of kung fu, specifically the way of the Monkey. It trained so much, that these Electivire started to only interact with themselves til a brand new breed of Electivire, more agile and martial art oriented emerged.
Competitive Use: This is Electivire like you have never seen before. Electivire-KungFu is a great wallbreaker thanks to its strong dual STAB (Iron Fist boosted Thunder Punch is better than nothing), with it can boost with either Swords Dance or Nasty Plot. It is held back by its awkward speed tier, which allows it to creep the 100 base speed tier, but leaves it permanently outpaced by juggernaut Garchomp. Not to mention its rather frail so it wont be taking much attacks.
Pokemon: Mantine-Spiny
Egg Group: Water 1
Type: Poison / Flying
Stats: 85 HP / 40 Atk /
111 Def / 80 SpA / 140 SpD / 70 Spe
New Moves: Sludge Bomb, Recover, Toxic Spikes, Knock Off
Abilities: Water Absorb / Swift Swim / Regenerator
Dex Entry: It primarily lives on the beach, where it glides across the sands. It dips underwater to hunt though.
Competitive Use: Mantine-Spiny is a very bulky special wall, but thanks to its different typing, its list of Pokémon it checks and the Pokémon that check it are vastly different than that of Toxapex, so they won't compete.