In Emerald Ex: It is not in any of this guide's encounter tables. Its type (Dark / Dragon) and base stats (total 420) are the same as in the official games.
Level-up moves
This game's documentation doesn't publish learnsets, so none are listed here — see the coverage notes on the guide page.
TMs & HMs
This game's documentation doesn't publish TM compatibility, so none is listed here.
Where to find Zweilous
Not found in the wild — evolve or trade for it.
Other changes in this game
- The creator's changelog has an unfinished entry for this Pokémon: where a type should be it reads “45”, so nothing is taken from it.
- No abilities or learnsets are published for this game, so none are listed here.