電光超人グリッドマン
[b]Denkou Choujin Gridman: boys invent great hero[/b] is the ninth short featured in the [[Japan Animator Expo]]. It is based off of the live action series [i][[Denkou Choujin Gridman]][/i].

The entire short took place 22 years after Gridman's final battle with Khan Digifer. [[Toudou Takeshi]], a former brainwashed servant of Khan, reflects on the past incidents as monster attacks took place in real life. Using the Acceptor, he transforms into [[Gridman Sigma]] before facing the monster.
denkou choujin gridman: boys invent great hero