Professor Oak Challenge
A Professor Oak challenge is where you catch all available Pokémon before moving on to the next story event. I have not found a guide for this game, so this page may be the first. Please contact me if you know of an existing guide or know of inaccuracies in this guide.
A total of 307 Pokémon can be obtained in this game, including the six accessible in Ranger Net missions. Without access to those events, the total available Pokémon number 301.
Opening Sequence
Total: 1 Pokémon
You will need to capture Marill and keep it with you until Rasp Cavern in order to get Geodude before the end of the first Mission.
- Pichu
- Krabby
- Wingull
- Sunkern
- Mareep
- Bulbasaur
- Sentret
- Teddiursa
- Ursaring
- Marill
Total: 11 Pokémon
Mission 1: Drive the Pinchers out of the Woods!
Total: 13 Pokémon
- Kricketot
- Hoothoot
- Stantler
- Spinarak
- Buizel (Pinchers)
- Croagunk (Pinchers)
Total: 19 Pokémon
- Poochyena
- Zubat
- Koffing
- Geodude (requires Marill's Soak x1)
- Cranidos (Pinchers)
Total: 24 Pokémon
Between Missions 1 and 2
Total: 26 Pokémon
- Murkrow (requires Tackle x1)
Total: 27 Pokémon
Total: 28 Pokémon
Mission 2: Salvage the Sunken UFO!
Total: 29 Pokémon
- Luvdisc
- Chinchou
- Mantyke
- Clamperl
- Corsola
- Horsea
- Carvanha
- Sharpedo
Total: 37 Pokémon
Between Missions 2 and 3
Total: 39 Pokémon
- Munchlax
- Eevee (Pinchers)
- Piplup (Pinchers)
- Aipom
- Shellos (requires Crush x1)
Total: 44 Pokémon
Total: 45 Pokémon
You will need to capture Mudkip or another Pokémon with Soak x1 or greater and keep it with you until the Wireless Tower in order to get Shuckle before the end of the third Mission.
Total: 48 Pokémon
- Bonsly (requires Soak x1)
- Ivysaur (Pinchers)
- Tyrogue
- Graveler (requires Soak x2)
- Wobbuffet (Pinchers)
- Electrike
Total: 54 Pokémon
- Skuntank (Pinchers)
- Gligar (Pinchers)
Total: 56 Pokémon
Mission 3: Liberate the Wireless Tower!
- Shuckle (requires Soak x1)
- Magnemite
- Voltorb
- Elekid
- Porygon2
- Aron
- Shinx
- Lairon (Pinchers)
- Hitmonchan
- Raikou
Total: 66 Pokémon
Between Missions 3 and 4
- Pelipper
- Cherubi
- Ralts
- Bidoof
Total: 70 Pokémon
- Skiploom (hidden Pokémon)
Total: 71 Pokémon
Total: 72 Pokémon
Mission 4: Investigate the Old Mansion!
- Mothim
- Cyndaquil
- Treecko
- Budew (requires Burn x1)
Total: 76 Pokémon
Total: 77 Pokémon
Outside:
- Noctowl
- Gloom
- Grovyle
- Duskull
- Togetic
Inside:
- Misdreavus
- Glameow
- Mightyena
- Espeon
- Gastly
- Golbat
- Ariados
- Vulpix
- Mime Jr.
- Chikorita (Pinchers)
- Bayleef (Pinchers)
- Meganium (Pinchers)
Total: 94 Pokémon
Between Missions 4 and 5
- Oddish (requires Burn x1)
Total: 95 Pokémon