Pippo is Gazelle's old friend and co-worker. He has a strong conviction to justice, and also is very unlucky. Against his father's wishes, he joins the Okinawa Private Self-Defense Forces.  (Source: Wikipedia)

The story is set on Okinawa's isolated island of Iwado, which has seen a growing movement advocating a return to an autonomous government. Ao Fukai, a 12-year-old boy with a missing father, lives on the island with an old doctor named Toshio and is about to enter middle school. Ao's mother was taken away a decade ago by unknown individuals. Naru Arata, Ao's 12-year-old childhood friend and the story's heroine, lives with her father, older sister, and grandmother. She has a "Yuta" power awakened within her due to an incident when she was young. A mysterious entity called "Secret" suddenly appears and launches an attack on the Scub Coral lifeform on the island. Ao launches a certain military FP called "Nirvash" aboard a Japanese military transport in his fervent desire to protect the island. 
(Source: FUNimation)

An original video anime, released on Blu-ray in a combined Hybrid Disc that also hold an Eureka Seven AO game for the PlayStation 3. 
The OVA is set between episodes eight and nine of the series.

Manga sequel to the Eureka Seven anime series. The story centers around a boy named Ao who "sets 'destiny' in motion again when he holds the 'power'". 
(Source: Anime News Network)

Spin-off set in the same world as Eureka Seven AO, following the adventures of heroine Yuna Maltan.