Art-  Purpulear
Character is my own
So I remembered my victinisona that I had done awhile ago, and given most of my other sonas had updated and or had evolved forms I thought it was time that my victini had an update as well along with some more quality of character improvements seeing as they didn't have a story at all to them or any sort of
As it suggests in the artwork they're a separate form of Lynus that only appears whenever Lynus faints, upon Lynus fainting their body is enveloped in a rather bright light before changing, similar to a mega evolution, if in a mystery dungeon they'd be warped out of it mid transformation. Once the transformation is complete Pyrus is able to roam about freely until they themself faint, which will revert them back into Lynus. Pyrus is more keen on doing more social interactions than Lynus would and often comes across as smug and energetic at times, even if their gut were to be filled up quite a bit.

As for more story I'd have to think up some more given most of my sonas probably have only seen Lynus. Aside from Mudsdale, Pyrus seems to take a liking to stuffing cuties like them in his gut to keep safe.