Here is a list of the revealed Pokémon Conquest passwords thus far. To access them, go to the menu on the main overworld map and select the password option. After the password is confirmed, push the in-game time forward a month and the Pokémon should appear somewhere on the map. These passwords come from Serebii, and can only be used on North American versions of the title.

Eevee - 2rz3XFCKmR

Dratini - Sr5Z5GqAgR

Gyarados - mq2xRVNgRL

Cinccino - vVALFrGTXX

Oshawott - frCLRpXG88

Gible - LTb3n3RYJ8

Pansear - niE33w9rwM

Panpour - CNZF3wpq3x

Axew - BqWxXEK3xg

Darmanitan - pK5RgzqLG8

Sneasel - Rc338MpqLx

Beldum - CMqkZRRSRX

Larvitar - Lpu3ggCYk8

Emolga - Jnm3kqgN8X

Pikachu - FZP8GqRZRR

Riolu - Shw8mxRAJR

Scyther - 8GV3LMGrnM

Lapras - GfV33RVN3F