
Quick answer — Yoshinori Sayama worked on Birdy the Mighty: Decode 02 (Mechanical Design), Mobile Suit Gundam UC (Mechanical Design), Ergo Proxy (Design Works) and 10 more anime.
Yoshinori Sayama worked on Birdy the Mighty: Decode 02 (Mechanical Design), Mobile Suit Gundam UC (Mechanical Design), Ergo Proxy (Design Works), Mobile Suit Gundam: Char's Counterattack (Mechanical Design), Macross Plus (Design), Outlaw Star (Design Assistance), Birdy the Mighty: Decode (Mechanical Design), RahXephon (Mechanical Design) and 5 more.