Regenerator

Selectable — one of up to three, and only one is active.

Squirtle Water BST314Wartortle Water BST405Blastoise Water BST530Tentacruel Water Poison BST515Slowpoke Water Psychic BST315Slowbro Water Psychic BST490Grimer Poison BST325Muk Poison BST500Lickitung Normal BST385Vaporeon Water BST525Porygon Normal BST395Dratini Dragon BST300Dragonair Dragon BST420Dragonite Dragon Flying BST600Chikorita Grass BST318Bayleef Grass BST405Meganium Grass BST525Togetic Fairy Flying BST405Slowking Water Psychic BST490Mantine Water Flying BST485Ho-Oh Fire Flying BST680Mudkip Water BST310Lileep Rock Grass BST355Cradily Rock Grass BST495Jirachi Steel Psychic BST600Combee Bug Flying BST244Vespiquen Bug Flying BST474ShellosWest Water BST325GastrodonWest Water Ground BST475Happiny Normal BST220Panpour Water BST316Simipour Water BST498Mienfoo Fighting BST350Clauncher Water BST330Zygarde Dragon Ground BST600Diancie Rock Fairy BST600Minior Rock Flying BST440Tapu Fini Water Fairy BST570LatiasMega Dragon Psychic BST700GrimerAlolan Poison Dark BST325MukAlolan Poison Dark BST500SlowpokeGalarian Psychic BST315SlowbroGalarian Poison Psychic BST490SlowkingGalarian Poison Psychic BST490TornadusTherian Flying BST580TornadusTherian Flying BST580MiniorOrange Rock Flying BST440MiniorYellow Rock Flying BST440MiniorGreen Rock Flying BST440MiniorBlue Rock Flying BST440MiniorIndigo Rock Flying BST440MiniorViolet Rock Flying BST440Nacli Rock BST280Naclstack Rock BST355Garganacl Rock BST500Klawf Rock BST450Orthworm Steel BST480Veluza Water Psychic BST478Wo-Chien Dark Grass BST570Dipplin Grass Dragon BST485Hydrapple Grass Dragon BST540Marshmodo Dragon Poison BST420Swampage Dragon Poison BST535Hippopotato Grass Ground BST330Hippotaton Grass Ground BST525SlowbroGalarian Mega Poison Psychic BST590

Always on, alongside whichever main ability is chosen.

Oddish Grass Poison BST320Gloom Grass Poison BST395Vileplume Grass Poison BST490Tangela Grass BST435Staryu Water BST340Unown Psychic BST336Corsola Water Rock BST410Porygon2 Normal BST515Swampert Water Ground BST535Swalot Poison BST467Pachirisu Electric BST405Lickilicky Normal BST515Tangrowth Grass BST535Audino Normal BST445Solosis Psychic BST290Duosion Psychic BST370Reuniclus Psychic BST490Foongus Grass Poison BST294Amoonguss Grass Poison BST464Alomomola Water BST470Mienshao Fighting BST510Floette Fairy BST371Florges Fairy BST552Wishiwashi Water BST175Mareanie Poison Water BST305Toxapex Poison Water BST495Comfey Fairy BST485Tapu Bulu Grass Fairy BST570Gossifleur Grass BST250Eldegoss Grass BST460Clobbopus Fighting BST310Grapploct Fighting BST480SlowbroMega Water Psychic BST590SwampertMega Water Ground BST635AudinoMega Normal Fairy BST545UnownB Psychic BST336UnownC Psychic BST336UnownD Psychic BST336UnownE Psychic BST336UnownF Psychic BST336UnownG Psychic BST336UnownH Psychic BST336UnownI Psychic BST336UnownJ Psychic BST336UnownK Psychic BST336UnownL Psychic BST336UnownM Psychic BST336UnownN Psychic BST336UnownO Psychic BST336UnownP Psychic BST336UnownQ Psychic BST336UnownR Psychic BST336UnownS Psychic BST336UnownT Psychic BST336UnownU Psychic BST336UnownV Psychic BST336UnownW Psychic BST336UnownX Psychic BST336UnownY Psychic BST336UnownZ Psychic BST336UnownExclamation Psychic BST336UnownQuestion Psychic BST336WishiwashiSchool Water BST620Cyclizar Dragon Normal BST501Brute Bonnet Grass Dark BST570?FroslassMega Ice Ghost BST580SnorlaxMega Normal Grass BST640SnorlaxPrimal Normal BST640