God of Legend: Gigantis' Counterattack (Gundam vs Ideon) ( Kidou Senshi Vs. Densetsu Kyojin: Gyakushu no Gigantis , 1990) - by Yuichi Hasegawa . A crossover story where the Federation has Amuro hire Judau to investigate a Zeon remnant group's plan to resurrect a buried giant mecha. This non-canonical story implies