"Appeared" in the Fiend Folio... inasmuch as he can. That's right, he's invisible, and shapeless, although his form takes up a ten foot diameter spheroid. His palace, in the Air plane, is "great" and "airy".
In 2nd edition, Yan-C-Bin appeared in the Monstrous Compendium Appendix 3 for Planescape alongside not just his former brothers & sister, but also a cast of four new good archomentals: Ben-Hadar, Sunnis, Zaaman Rul, and his new personal rival, Chan.
Dragon Magazine #347 gave us the most insight into Yan-C-Bin - and the rest of the Evil Archomentals - of any edition before it.
Yan-C-Bin was one of the two classic archomentals who didn't fare so well in 4th edition; he had to share a single article in Dungeon Magazine #199's Lords of Chaos. He did benefit in one way, gaining a humanoid form to use to interact with his followers instead of the traditional shapeless mass of air.
All of the Princes of Elemental Evil made their grand debut for the newest edition in the D&D 5th edition adventure "Princes of the Apocalypse", which revolves around the party kicking the asses of the ever-fractious Cult of Elemental Evil. Ironically, he maintained his humanoid avatar from 4e in this edition.
|The Archomentals of Dungeons & Dragons|
|Good Archomentals:||Chan||Ben-Hadar||Sunnis||Zaaman Rul|