Despite the original not supporting DLC, Pokken Tournament DX will get at least two DLC packs. Each pack, referred to as waves, includes a new playable and two support pokemon to play around with.
The first wave includes Aegislash, the sword looking pokemon, and Mimikyu and Mega Rayquaza. After that Blastoise will join the fight with Mew and Celebi to support him.
Those interested will be able to get the first wave on Jan. 31, with the second one releasing on March 23.