Established in 1987 by ex-Madhouse staff and stopping abruptly in 2002, Triangle Staff was a minor animation company.
Some more credits can be found on Anime News Network.
- A Chinese Ghost Story (the animated feature, with Wang Film Productions)
- CB Chara Nagai Go World
- Devilman (OVAs, with Oh Production)
- éX-Driver (with Actas, episodes 1 & 2)
- Macross Plus
- Magic User's Club (both OVA and series, the latter with Madhouse)
- Nie A 7
- Serial Experiments Lain (with AIC)
- Shamanic Princess (with Bandai Visual)
- Space Pirate Mito (with Sunrise)
- The Venus Wars
- Weiß Kreuz (OVA, series by TMS Entertainment, Studio DEEN and Magic Bus)