Nihon Ad Systems
From Transformers Wiki
Nihon Ad Systems, Inc. (株式会社日本アドシステムズ Kabushiki-gaisha Nihon Ado Shisutemuzu), or NAS for short, is a Japanese anime production and character merchandising company founded in 1975. Popular anime series where they've had a hand includes Yu-Gi-Oh! Duel Monsters, Prince of Tennis, Neon Genesis Evangelion, and Rockman.EXE (but not AXESS).