Akuseru?

Akuseru, or アクセル in Katakana, is the original Japanese name for Axel.
In short, Axel is the 8th Member of Organization XIII. The only survivor to Castle Oblivion, and the only one (that we can see) that has a very close friendship (possibly more?) with another member of the Organization. His element being Fire, this is one Pyro not to be messed with.