Have we ever seen one dual type evolve into another dual type?

Is there a set of Pokemon that would go from rock\ground to ground\water for example?

Pleaselog inorregisterto add a comment.

As of Generation 8, in (mostly) Pokedex order:

Regular evolutions

Regional forms

Mega Evolutions

Different Forms***

*Before Generation VI, the Fairy type didn’t exist, meaning this entry is not true prior to Generation VI.

**Nincada does not technically evolve into Shedinja, but it’s close enough that I decided to include it.

***While form changes aren’t evolutions, I’m including them, as it’s still helpful to have. Necrozma is originally a single type, so its forms aren’t on here, even though they’re dual types.

A bit of random trivia:Swablu –> Altaria –> Mega Altariais the only dual typed Pokemon line to change types three times upon each evolution.

OK here is a complete list:

Onix (Ground-Rock) - Steelix (Ground-Steel)Scyther (Bug-Flying) - Scizor (Bug-Steel)Pupitar (Ground-Rock) - Tyranitar (Dark-Rock)Surskit (Bug-Water) - Masquerain (Bug-Flying)Nincada (Bug-Ground) - Ninjask (Bug-Flying) and/or Shedinja (Bug-Ghost)Swablu (Flying-Normal) - Altaria (Dragon-Flying)Skorupi (Bug-Posion) - Drapion (Poison-Dark)Rotom (Ghost-Electric) - Rotom Heat/Frost/Wash/Mow/Fan (Electric-Fire/Ice/Water/Grass/Flying)Meloetta Aria form (Psychic-Normal) - Meloetta Pirouette form (Fighting-Normal)

Those last two are form changes but the forms have different stats and duel types from the original. As you can see none lose both duel types they only change 1 type. I hope I helped.

P.S. I put the list in Numerical order.