Ok more fun speculation (please ignore my last failure)
-
SHA-V's site links to the sites of Yamapy's, Toshikazu Tanaka's and to a man called
Hideyuki Ashizawa (芦沢 英志). He says he worked for around 2 years in SNK. So looking at the surname and the dates, he's possibly Asshy.
- Hori_Hori (Metal Slug 3) says in the MS Complete Box liner notes he's working at SNK (pachislot Metal Slug) but using a different name. There is zero info around but just for the name and obscurity he could be
Yoshiaki Hori.