The Sinnoh Pokedex from Diamond and Pearl includes 493 Pokemon. Gen 4's biggest change is the physical/special split by move instead of type. Gyarados can finally use its 125 Attack on Water moves. The flipside: Sinnoh has a brutal Fire-type shortage. Infernape and Ponyta are basically it before postgame. Filter by type to see just how limited some coverage is.
Showing all 472 Pokemon obtainable in Diamond & Pearl, including post-game content and trading.
Getting the National Pokedex in Diamond & Pearl
Diamond and Pearl only require you to see every Sinnoh dex Pokemon, not catch them. Trainer battles, in-game trades, and story encounters cover most of the 150 entries. The tricky 151st is Manaphy: just view a book in the Pokemon Mansion on Route 212 and it registers.
Once Professor Rowan upgrades your dex, Pal Park opens for one-way GBA transfers (6 per day, no repeats). The dual-slot method also works: insert a GBA cart into your DS and certain species appear on specific routes. Postgame swarm encounters add even more variety.
Flaaffy
Ampharos
Bellossom
Politoed
Hoppip
Skiploom
Jumpluff
Sunkern
Sunflora
Yanma
Espeon
Umbreon
Slowking
Wobbuffet
Pineco
Forretress
Dunsparce
Gligar
Snubbull
Granbull
Qwilfish
Scizor
Shuckle
Teddiursa
Ursaring
Slugma
Magcargo
Swinub
Piloswine
Corsola
Delibird
Skarmory
Houndour
Houndoom
Kingdra
Phanpy
Donphan
Porygon2
Stantler
Smeargle
Tyrogue
Hitmontop
Smoochum
Elekid
Magby
Miltank
Larvitar
Pupitar
493 total across Generations 1 through 4. The Sinnoh regional dex has 151 Pokemon (a nod to Gen 1). Many popular species are locked behind the National Dex, which you unlock after seeing all 150 Sinnoh Pokemon. The regional dex is notoriously limited, especially for Fire types.
Before Gen 4, whether a move was physical or special depended on the move's type. All Water moves were special, all Fighting moves were physical, regardless of the actual move. Diamond and Pearl changed it so each move has its own physical or special category. This lets Pokemon like Gyarados (125 Attack) finally use physical Water moves.
Chimchar. Infernape is Fire/Fighting with great Speed and mixed offenses. The reason it's the top pick: Sinnoh has almost no Fire types. Chimchar and Ponyta are your only options before postgame. Piplup evolves into Empoleon (Water/Steel, unique typing), and Turtwig's Torterra (Grass/Ground) is solid but slow.
The Sinnoh regional dex only includes two Fire-type evolutionary lines before the National Dex: Chimchar and Ponyta. If you didn't pick Chimchar, Ponyta is your only Fire-type option until postgame. Platinum fixed this by expanding the regional dex, but DP is stuck with the drought.
Generation 4, released in 2006 in Japan and 2007 in North America for the Nintendo DS. Introduced the physical/special split per move, online trading via the GTS, the Sinnoh region, and 107 new Pokemon including new evolutions for older species.
- Gen IY
Yellow151 Pokemon - Gen IRB

Red & Blue151 Pokemon - Gen IIGS

Gold & Silver251 Pokemon - Gen IIC
Crystal251 Pokemon - Gen IIIRS

Ruby & Sapphire202 Pokemon - Gen IIIFRLG

FireRed & LeafGreen151 Pokemon - Gen IIIE
Emerald202 Pokemon - Gen IVPt
Platinum210 Pokemon - Gen IVHGSS

HeartGold & SoulSilver256 Pokemon - Gen IVDP

Diamond & Pearl151 Pokemon - Gen VBW

Black & White156 Pokemon - Gen VB2W2

Black 2 & White 2301 Pokemon - Gen VIXY

X & Y457 Pokemon - Gen VIORAS

Omega Ruby & Alpha Sapphire211 Pokemon - Gen VIIUSUM

Ultra Sun & Ultra Moon403 Pokemon - Gen VIISM

Sun & Moon302 Pokemon - Gen VIILGPE

Let's Go Pikachu & Eevee153 Pokemon - Gen VIIISwSh

Sword & Shield400 Pokemon - Gen VIIIPLA
Legends: Arceus242 Pokemon - Gen VIIIBDSP

Brilliant Diamond & Shining Pearl151 Pokemon - Gen IXSV

Scarlet & Violet400 Pokemon - Gen IXLZA
Legends: Z-A364 Pokemon - Gen XWW

Winds & Waves51 Pokemon