Talk:Bumi/@comment-66.229.134.209-20120423032220/@comment-4521003-20120423032532

It is possible for the child of two benders to be a non-bender. For example, Piandao was the son of two firebenders, yet he was a non-bender.

It is also possible for siblings to be a mix of bender and non-bender.

Nothing says that Bumi had to be an airbender or a waterbender.