Board Thread:Naruto Discussions/@comment-25369463-20140908104317/@comment-1514283-20140910143430

Elveonora wrote: I expect Explosion Release to be Lightning+Earth. Just because Octopuses are aquatic doesn't mean it has to have Water Release.

Sure, but literally nothing suggests Gyūki has Explosion Release. That would seem very random to me.

Storm Release is common in Kumo, so I wouldn't be surprised if that's his nature. Sorta like how Magnet Release may be more common in Suna, as two Kazekage of seemingly no relation possessed it, and Shukaku does too.