Heinkel He 118:
Failed competitor to the Ju 87, only around 10 production aircraft were made.
Disguised M6A1 Seiran:
Planned to be flown from the I-400 and I-401 submarines against US forces at Ulithi Atoll, the aircraft were painted with US markings in order to confuse identification. They were thrown overboard from the subs once the surrender order was received.