Irrumabo/Serr/Tagata

This person reminds me of a bouquet of flowers; many different kinds, wrapped up in together in one package. Xe seems to have different forms (which is the most familiar thing Ive seen since coming here, to be honest), but I haven't figured out if there's a rhyme or reason to it yet (or if there's any at all, which is perfectly valid on its own). Xe knows a lot about the world, it seems. Where did xe get all of that wisdom?