Hau

Hau is one of the main characters of the Pokemon: New Voyages manga and and anime

Alola
Popplio -> Brionne -> Primarina ♀ Petilil -> Lilligant ♀ Igglybuff -> Jigglypuff -> Wigglytuff Kecleon ♂ Garbodor Poliwag -> Poliwhirl - Politoed ♂ Noibat -> Noivern Ariados ♀ Jangmoo -> Hakamoo -> Kommo-o ♂ Pyukumuku
 * Caught on Route 1 Alola
 * Caught in Melemele Meadow
 * Caught on Route 4 Alola
 * Caught in Dividing Tunnel
 * Caught in East Malie Cape
 * Caught in Malie Gardens
 * Caught in Vast Poni Canyon
 * Caught in Ula'ula Garden
 * Caught in Vast Poni Canyon
 * Caught in Ultra Deep Sea

Sinnoh
Chimchar -> Monferno -> Infernape

Bidoof -> Bibarel

Cherubi -> Cherrim

Shieldon -> Bastiodon

Kirlia -> Gallade

Tangela -> Tangrowth

Porygon Z

Unova
Snivy -> Servine -> Serperior

Munna -> Musharna

Timburr -> Gurdurr -> Conkeldurr

Ducklett -> Swanna

Elgyem -> Beheeyem

Maractus Rufflet -> Braviary
 * Temporarily traded for Poliwhirl with Koraru, traded back later

Amoonguss

Krokorok -> Krookodile

Deino -> Zweilous -> Hydreigon