According to Japanese Wikipedia wikipedia:ja:ガンダム開発計画#ガーベラ・テトラ改, this MS first appearance was in Bandai Visual's LD. It's designed by Mika Akitaka, and that's the version that appeared in Ghiren's Greed and GUNDAM WEAPONS 3. Katoki simply redesign it as Gundam FIX version. Kuruni 17:58, March 27, 2011 (UTC)
Your info seems credible, go ahead and change the article accordingly then. -Dav7d2 - "You mustn't let mistakes weigh you down. Acknowledge them and take what you've learned to move on. That is the privilege of being a man."-Full Frontal 09:20, March 28, 2011 (UTC)