The first wave of Gen 3 Pokémon for Pokémon GO came as part of the popular 2017 Halloween event, with another 50 coming this month alongside the addition of new dynamic weather effects. Although Pokémon GO developer Niantic has yet to confirm which of the 50 Pokémon will soon be added to the game, here is what is expected based on official imagery and press release mentions:
Gen 3’s December rollout (possible Pokémon out of a total of 50)
- 252. Treecko (Starter)
- 253. Grovyle
- 254. Sceptile
- 255. Torchic (Starter)
- 256. Combusken
- 257. Blaziken
- 258. Mudkip (Starter)
- 259. Marshtomp
- 260. Swampert
- 265. Wurmple
- 266. Silcoon
- 277. Beautifly
- 268. Cascoon
- 269. Dustox
- 280. Ralts
- 281. Kirlia
- 282. Gardevoir
- 287. Slakoth
- 288. Vigoroth
- 289. Slaking
- 300. Skitty
- 301. Delcatty
- 303. Mawile
- 311. Plusle
- 312. Minun
- 316. Gulpin
- 317. Swalot
- 320. Wailmer
- 321. Wailord
- 331. Cacnea
- 332. Cacturne
- 333. Swablu
- 334. Altaria
- 349. Feebas
- 350. Milotic
- 359. Absol
- 361. Snorunt
- 362. Glalie
- 371. Bagon
- 372. Shelgon
- 373. Salamence
Source: Eurogamer
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