Arachinyx (Arachinid + Nyx)
1A - Nightborne - User's Psychic-type moves gain a 2x boost. If the user's HP is below half, it is immune to Priority
HA - Fearless - Immune to Dark-type Moves
HP: 70
Atk: 42
Def: 50
SpA: 92
SpD: 132
Spe: 68
BST: 454
'New' Moves (this Pokémon gets this Moves and Araquanid does not) - Calm Mind, Cosmic Power, Extrassensory, Future Sight, Healing Wish, Light Screen, Lunar Dance, Psybeam, Psychic, Psychic Terrain, Psyshock, Psywave, Trick Room, Wonder Room, Dazzling Gleam, Moonblast, Dark Pulse, Night Daze, Night Slash, Shadow Ball
'Removed' Moves (Araquanid gets these Moves and this Pokémon does not) - Soak, Bubble, Bubble Beam, Aqua Ring, Liquidation, Ice Beam, Blizzard, Scald, Frost Breath, Poison Jab
Design - Looks like Araquanid, but instead of the bubbles it has mini translucent Black Holes, and its body is black with many details that resembles stars.
Competitive Corner - Arachinyx is a powerful Wallbreaker thanks to its ability Nightborne, giving it twice as much power on Psychic-type moves and even making it immune to priority when at low health, which may actually help in Trick Room builds. It is severly walled by Steel-types and other Psychic resists. Also, it is pretty, and its below average bulk of 70/50/132 makes it extremely sucetible to physical moves.
Arockchinid (Arachinid + Rock)
1A - Rocky Armour - User's Rock-type moves gain a 2x boost. If the user hits an opponents for half of its full HP, the user Sets up Stealth Rock on the opponents field automatically
HA - Dry Skin
HP: 70
Atk: 68
Def: 132
SpA: 92
SpD: 50
Spe: 42
BST: 454
'New' Moves (this Pokémon gets this Moves and Araquanid does not) - Accelerock, Head Smash, Rock Blast, Rock Polish, Rock Slide, Rock Throw, Rock Tomb, Rock Wrecker, Rollout, Smack Down, Stealth Rock, Stone Edge, Bulldoze, Dig, Earthquake, Spikes, Iron Head
'Removed' Moves (Araquanid gets these Moves and this Pokémon does not) - Soak, Bubble, Bubble Beam, Aqua Ring, Liquidation, Ice Beam, Blizzard, Scald, Frost Breath
Design - Looks like Araquanid, but has a rocky armour and its body is light brown coloured.
Competitive Corner - Arockchinid is, similarly to it Water sibling, a powerful Wallbreaker that only has a single powerful STAB move, its easy to wall it, but once its checks are removed, good luck :P
Airachinid (Arachinid + Air)
1A - Wind Tamer - User's Flying-type moves gain a 2x boost. Faster opponents have their evasion halved.
HA - Windshielded - Immune to Flying-type Moves
HP: 42
Atk: 68
Def: 132
SpA: 70
SpD: 42
Spe: 92
BST: 454
'New' Moves (this Pokémon gets this Moves and Araquanid does not) - Air Cutter, Air Slash, Defog, Fly, Hurricane, Tailwind
'Removed' Moves (Araquanid gets these Moves and this Pokémon does not) - Soak, Bubble, Bubble Beam, Aqua Ring, Liquidation, Scald
Design - Looks like Araquanid, but has its body made of clouds that allow it to float in the air, its legs look like Lando-T's
Competitive Corner - Airachinid is just like its siblings, just another Wallbreaker with only a single powerful STAB, but with a key difference this time around, Airachinid is the faster of them, and can hit faster opponents (if it takes the hit) with a 140% accurate Huricane.