The Uranium Halloween Event

[MonkeyLord83]

(...) Hope they can evolve!

That's exactly what I was asking myself too. But I somehow sense that evolution will be disabled for those two. But we'll find out soon.... *prepares Dusk Stone*

They look enough like Delta forms on Pkm Insurgence, so I'm guessing the inspirations are from there. And Delta Pokemons on Insurgence can:

Spoiler

have different typing(s), evolve, they just can't breed

So I'd assume the same for these two.

To go more into about Delta forms, it was explained on Pkm Insurgence that

Spoiler

these Pokemon was experimented on by scientist and therefore developed weird appearances and typings. Thus they became sterile as a result.