Board Thread:Game Discussion/@comment-32983682-20171015075802/@comment-30084465-20190714091830

DanSan0102 actually Kaa already appears in the game as a NPC in Kaa's Jungle Gym. Surely the developers made this decision since her body is too long to be a character that moves around the kingdom.

But most of all others would have a chance to appear in future updates. And probably the events (or maybe updates in the main story) you've said we'll see soon. As you say, all of them are the most requested by players.