Adverb for "multiple"

Say that I have a Pokémon with 2 types: Fire and Flying. One could say this Pokémon has "multiple types." That is because the designer of this Pokémon "typed" it that way.

Is it correct to say the Pokémon was "multiply typed," where "multiply" is an adverb describing how it was typed? Is there a better and succinct way of describing this typing process?

In most cases, you could use the word multi-typed. However, I imagine this might cause confusion in Pokemon, since multitype is itself a specific Pokemon ability. If this describes exactly what you're looking for then fantastic, but note that it comes with a set of rules that may not help to explain the multiple types outside of those rules.

Multiply typed is therefore fine. Note that the pronunciation of multiply in this instance is /-plē/ to rhyme with ripply, rather than /plī/ to rhyme with fly.