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 270 Pokémon can be obtained in this game, including the three accessible in Ranger Net missions. Without access to those events, the total available Pokémon number 267.
Ranger School Day 1
- Bidoof
- Taillow
- Budew
- Pichu
Total: 4 Pokémon
Ranger School Night 1
Total: 6 Pokémon
Ranger School Day 3
Total: 7 Pokémon
Ranger School Day 4
- Squirtle
- Bonsly (requires Taillow's Cut and Squirtle's Soak)
Total: 9 Pokémon
Total: 10 Pokémon
- Seedot (shake the tree with Tackle x1)
Total: 11 Pokémon
- One of Munchlax, Pachirisu, or Starly
Total: 12 Pokémon
Ranger School Graduation
Total: 13 Pokémon
Mission 2: Investigate the Marine Cave!
Total: 15 Pokémon
- Geodude (requires Soak x1)
- Nosepass
- Gastrodon
- Graveler (requires Crush x1 and Gastrodon's Soak)
Total: 19 Pokémon
Between Missions 2 and 3
This catch is part of the Quest Calm Down Miltank.
Total: 20 Pokémon
Mission 3: Fight the Vien Forest Fire!
- Cherubi
- Shinx
- Happiny
- Weedle (shake trees with Tackle x1)
- Wartortle
- Beedrill (shake a tree with Tackle x1)
- Roselia
- Buizel
- Blastoise
- Grotle
- Combee (after putting out the fire)
Total: 31 Pokémon
Mission 4: Destroy the Strange Machines!
Total: 32 Pokémon
- Growlithe
- Rattata
- Chatot
- Tyrogue
- Magnemite
- Elekid
- Magby
- Voltorb
- Wingull
- Raticate
- Toxicroak (Team Dim Sun)
Total: 43 Pokémon
Between Missions 4 and 5
Total: 44 Pokémon
This catch is part of the Quest Please Save Cranidos.
Total: 45 Pokémon
Total: 48 Pokémon
Mission 5: Recover a Key from Sharpedo!
- Qwilfish
- Corsola
- Staryu
- Mantine
- Sharpedo (requires Mantine's Swim)
Total: 53 Pokémon
Between Missions 5 and 6
- Mareep
- Swellow
- Aipom
- Pineco
- Spearow
- Oddish (requires Tackle x1)
- Yanma (shake a tree with Tackle x1)
Total: 60 Pokémon
This catch is part of the Quest The Boy Who Cried Lumineon.
- Lumineon (requires Mantine's Swim)
Total: 61 Pokémon
This catch is part of the Quest Eevee for Marital Bliss.
Total: 62 Pokémon
Mission 6: Seek the Origin of the Quake!
- Staravia
- Larvitar
- Pinsir
- Numel
- Mankey
- Gligar
- Mawile
- Cherrim (requires Cut x1)
- Aron
- Rampardos (Team Dim Sun)
Total: 72 Pokémon
Between Missions 6 and 7
Total: 73 Pokémon
This catch is part of the Quest Please Save Turtwig.
Total: 74 Pokémon
This catch is part of the Quest Who Ate My Lunch?!.
Total: 75 Pokémon
Mission 7: Teach at Ranger School!
Total: 77 Pokémon
Mission 8: Look for Missing Barlow!
- Charmander
- Slugma
- Drifloon
- Stunky
- Pikachu
- Magcargo (Team Dim Sun)
- Magmar
- Kangaskhan (Team Dim Sun)
- Shuppet
- Lairon
- Rhyhorn
- Muk (requires Psy Power x1)
- Gloom (Team Dim Sun)
Total: 90 Pokémon
- Machoke (Team Dim Sun)
- Spinarak
- Houndour
- Purugly
- Mime Jr. (Team Dim Sun)
- Ralts
- Luxio
- Makuhita
- Drowzee
- Monferno
- Vulpix
- Electabuzz
- Drapion (Team Dim Sun)
Total: 103 Pokémon
Mission 9: Support Sven at the Ruins!
Total: 104 Pokémon
Total: 105 Pokémon
This catch is part of the Quest Please Save Shieldon.
Total: 106 Pokémon
- Flaaffy
- Ponyta
- Girafarig
- Ninjask (requires Tackle x1)
- Nuzleaf
- Sudowoodo (requires Soak x2)
- Tauros
- Dodrio
Total: 114 Pokémon
- Murkrow (Team Dim Sun)
- Abra
- Rapidash
- Koffing (Team Dim Sun)
- Skarmory (requires Cut x2)
- Bastiodon
- Vileplume
Total: 121 Pokémon
- Drifblim
- Duskull
- Hypno
- Sableye
- Sandshrew
- Pupitar (requires Elevate or Psy Power x1)
- Kirlia
- Skuntank
- Umbreon
- Spiritomb (Boss)
Total: 131 Pokémon
Between Missions 9 and 10
This catch is part of the Quest Apologies to Vespiquen.
Total: 132 Pokémon
This catch is part of the Quest Please Save Chimchar.
Total: 133 Pokémon
Mission 10: Get the Blue Gem!
Except for Floatzel, these catches require traversing the river with Floatzel's River Flow to access new parts of the forest.
- Floatzel
- Kricketune
- Forretress
- Lopunny
Total: 137 Pokémon
- Golbat
- Jigglypuff
- Spheal
- Swinub
- Sealeo
- Chingling (requires River Flow)
- Camerupt
- Piloswine
Total: 145 Pokémon
- Houndoom (Team Dim Sun)
- Prinplup
- Delibird (shake the tree with Tackle x1)
Total: 148 Pokémon
- Empoleon
- Jynx
- Raichu
- Abomasnow (requires Tackle x3)
Total: 152 Pokémon
- Haunter
- Snorunt
- Scyther
- Weezing
- Wigglytuff
- Dratini
- Vaporeon
- Ninetales
- Glalie
- Walrein
- Mismagius (requires two instances of Burn x1)
Total: 163 Pokémon
After catching Mismagius, you now have access to Psy Power x3, which is required to open a door in Chroma Ruins. Returning back there at this time gives access to:
- Probopass (requires Psy Power x3)
Total: 164 Pokémon
After this, return to Almia Castle to complete the mission.
- Riolu
- Froslass (Team Dim Sun)
- Lucario (Boss)
Total: 167 Pokémon
This catch is part of the Quest Please Save Piplup.
Total: 168 Pokémon
Mission 11: Get the Red Gem!
- Torkoal
- Hariyama
- Bagon
- Shelgon
- Charmeleon
- Flareon (requires Magma Flow)
- Pelipper
- Rhydon
- Aggron
Total: 177 Pokémon
After catching Aggron, you now have access to Tackle x4, which is required to awaken Torterra in Vien Forest. Returning back there at this time gives access to:
- Torterra (requires Tackle x4)
Total: 178 Pokémon
After this, return to Volcano Cave to complete the mission.
- Infernape (Team Dim Sun)
- Heatran (Boss)
Total: 180 Pokémon
Between Missions 11 and 12
This catch is part of the Quest Snover's Mysterious Presence.
Total: 181 Pokémon
- Horsea
- Gorebyss
- Tentacruel
- Huntail
- Lanturn
Total: 186 Pokémon
Mission 12: Rescue Wailord!
- Seadra (Team Dim Sun)
- Starmie (Team Dim Sun)
- Omanyte
- Kingdra (Team Dim Sun)
- Wailord (no capture required)
Total: 191 Pokémon
Mission 13: Reveal the Hideout's Secrets!
- Magneton
- Mr. Mime
- Machamp
- Jolteon (Team Dim Sun)
- Mothim
- Luxray
- Cacnea (Team Dim Sun)
- Victreebel (Team Dim Sun)
- Honchkrow (Team Dim Sun)
- Dusclops
- Arcanine
- Sceptile
- Gliscor (Team Dim Sun)
Total: 204 Pokémon
Mission 14: Get the Yellow Gem!
Total: 205 Pokémon
- Skorupi
- Fearow
- Cacturne
- Hippowdon
Total: 209 Pokémon
- Golem
- Ariados
- Bronzor
- Bronzong
- Sandslash
- Claydol
- Gengar
- Gabite
- Banette
- Espeon
- Bellossom
- Tyranitar
- Cresselia (Boss)
- Magnezone (Team Dim Sun)
Total: 223 Pokémon
Between Missions 14 and 15
This catch is part of the Quest Unidentified Fleeing Omastar.
Total: 224 Pokémon
This catch is part of the Quest Mischievous Sneasel.
Total: 225 Pokémon
This catch is part of the Quest Misdreavus Mischief Mystery!.
Total: 226 Pokémon
Mission 15: Protect the Ranger Union HQ!
- Electivire (Team Dim Sun)
- Garchomp (Team Dim Sun)
Total: 228 Pokémon
Mission 16: Execute Operation Brighton!
This catch is part of the Quest Elaine's Favorite.
Total: 229 Pokémon
Total: 230 Pokémon
- Shiftry (Team Dim Sun)
- Electrode (get the password to the elevator wrong)
- Mamoswine (Team Dim Sun)
- Crobat
- Primeape
- Absol
- Scizor
- Blaziken
- Ampharos (requires Cut x4)
- Alakazam (Team Dim Sun)
- Gardevoir (Team Dim Sun)
Total: 241 Pokémon
- Rhyperior (Team Dim Sun)
- Magmortar (Team Dim Sun)
- Gallade (Team Dim Sun)
- Dusknoir (Team Dim Sun)
- Darkrai (Team Dim Sun)
Total: 246 Pokémon
Postgame
- Leafeon (requires River Flow)
- Salamence
Total: 248 Pokémon
Total: 249 Pokémon
Total: 250 Pokémon
Total: 251 Pokémon
- Registeel (requires Cut x5)
Total: 252 Pokémon
- Glaceon (requires River Flow x2)
Total: 253 Pokémon
- Regice (requires Burn x5)
- Weavile
Total: 255 Pokémon
Total: 256 Pokémon
Total: 257 Pokémon
- Regirock (requires River Flow and Crush x5)
Total: 258 Pokémon
This catch is part of the Quest Roserade Red, Roserade Blue?.
- Roserade (requires River Flow)
Total: 259 Pokémon
This catch is part of the Quest White Pokémon for Peace?.
Total: 260 Pokémon
This catch is part of the Quest Pachirisu's Hide and Seek and only appears if the player did not pick Pachirisu as their first Partner Pokémon.
This catch is part of the Quest Things That Go Bump... and only appears if the player did not pick Munchlax as their first Partner Pokémon.
This catch is part of the Quest Starly Lost Its Way and only appears if the player did not pick Starly as their first Partner Pokémon.
Total: 262 Pokémon
This catch is part of the Quest What Happened to Machop!?.
- Machop (requires Crush 4)
Total: 263 Pokémon
This catch is part of the Quest Who Is on Hippowdon's Nose?.
Total: 264 Pokémon
This catch is part of the Quest Pelipper's Plea.
Total: 265 Pokémon
This catch is part of the Quest Wish for the Vien Forest.
- Celebi (requires River Flow)
Total: 266 Pokémon
After all 266 above Pokémon
- Regigigas (requires bringing Regice, Regirock, and Registeel)
Total: 267 Pokémon
If the player does not have access to Ranger Net Missions, then 267 is the total number of Pokémon that can be captured.
Ranger Net Mission: Dialga in Hia Valley!?
Total: 268 Pokémon
Ranger Net Mission: Palkia in Haruba Desert!?
Total: 269 Pokémon
Ranger Net Mission: For the Bride and Shaymin!
Total: 270 Pokémon